a) x + 678 = 7818
b) 4029 + x = 7684
c) x – 1358 = 4768
tìm x:
x + 678 = 2813
4529 + x = 7685
x - 358 = 4768
2495 - x = 698
x × 23 = 3082
36 × x = 27612
x : 42 = 938
4080 : x = 24
a) 15 x 1358 + 590 x 358 + 85 x 1358 - 490 x 358
b) 9,3 x 45 + 9,3 x 5,7 - 18,6
a) 15 x 1358 + 590 x 358 + 85 x 1358 - 490 x 358
=15 x 1358 + 85 x 1358 + 590 x 358 - 490 x 358
=1358x(15+85)+358x(590-490)
=1358x100+358x100
=135800+35800
=171600
b) 9,3 x 45 + 9,3 x 5,7 - 18,6
=9,3x(45+5,7)-18,6
=9,3x50,7-18,6
=471,51-18,6
=452,91
15x1358+590x358+85x1358-490x358
=(15x1358+85x1358) + (590x358-490x358)
=1358x(15+85) + 358x(590-490)
=1358x100+358x100
=135800+35800
=171600
a) 15 x 1358 + 590 x 358 + 85 x 1358 - 490 x 358
= 1358 x ( 15 + 85 ) + 358 x ( 590 - 490 )
= 1358 x 100 + 358 x 100
= 100 x ( 1358 + 358 )
= 100 x 1716
= 171 600
b) 9,3 x 45 + 9,3 x 5,7 - 18,6
= 9,3 x 45 + 9,3 x 5,7 - 9,3 x 2
= 9,3 x ( 45 + 5,7 - 2 )
= 9,3 x 48,7
= 452,91
Học tốt nhé bạn !
a,x + 678 = 2813
b,4529 + x = 7685
c,x - 358 = 4768
d,2495 - x = 698
e,x × 23 = 3082
f,36 × x = 27612
g,x : 42 = 938
h,4080 : x = 24
a/ x + 678 = 2813
x = 2813 - 678 = 2135
Vậy x = 2135
b/ 4529 + x = 7685
x = 7685 - 4529 = 3156
Vậy x = 3156
c/ x - 358 = 4/68
x= 4/68 + 358 = 6087/17
Vậy x= 6087/17
d/ 2495 - x = 698
x = 2495 - 698 = 1797
Vậy x = 1797
e/ x nhân 23 = 3082
x = 3082 : 23 = 134
Vậy x = 134
f/ 36 nhân x = 27612
x = 27612 : 36 = 767
Vậy x = 767
g/ x : 42 = 938
x = 938 x 42 = 39396
Vậy x = 39396
h/ 4080 : x = 24
x = 4080 : 24 = 170
Vậy x = 170
tim x:
a/ 2054+x=4725-279
b/ 4768-x=358
a) 2054 + x = 4725 - 279
2054 + x = 4446
x = 4446 - 2054
x = 2392
b) 4768 - x = 358
x = 4768 - 358
x = 4410
a) 2054 + x = 4725 - 279
2054 + x = 4446
x = 4446 - 2054
x = 2392
b) 4768 - x = 358
x = 4768 - 358
x = 4410
Đúng mình nha bạn
a)2054+x=4725-279=2446
x=2446-2054=392
b)x=4768-358=4410
Tính nhanh : 15 x 1358 + 590 x 358 + 85 x 1358 - 490 x 179 x 2.
=1358 x (15+85)+358x(590-490)
=1358x100+358x100
=100x(1358+358)
=100x1716
=171600
= 1358 x ( 15 + 85) + 358 x ( 590 - 490)
= 1358 x 100 + 358 x 100
= 100 x ( 1358 + 358 )
= 100 x 1716 = 171600
Tìm x :
a) ( x + 15 ) . 24 = 1200
b) 4768 - x : 12 = 4681
a, ( x + 15 ) . 24 = 1200
( x + 15 ) = 1200 : 24
x + 15 = 50
x = 50 - 15
x = 35
Vậy x = 35
b, 4768 - x : 12 = 4681
x : 12 = 4768 - 4681
x : 12 = 87
x = 87 . 12
x = 1044
Vậy x = 1044
a) (x + 15) . 24 = 1200
x + 15 = 1200 : 24 = 50
x = 50 - 15
x = 35
b) 4768 - x : 12 = 4681
x : 12 = 4768 - 4681
x : 12 = 87
x = 87 . 12
x = 1044
x + 678 = 2813 4529 + x = 7685 x - 358 = 4768 2495 - x = 698
x × 23 = 3082 36 × x = 27612 x : 42 = 938 4080 : x = 24
x + 678 = 2813 4529 + x = 7685 x - 358 = 4768 2495 - x = 698
x × 23 = 3082 36 × x = 27612 x : 42 = 938 4080 : x = 24
x + 678 = 2813
x = 2813 - 678
x = 2135
4529 + x = 7685
x = 7685 - 4529
x = 3156
x - 358 = 4768
x = 4768 + 358
x = 5126
2495 - x = 698
x = 2495 - 698
x = 1797
x . 23 = 3082
x = 3082 : 23
x = 134
36 . x = 27612
x = 27612 : 36
x = 767
x : 42 = 938
x = 938 . 42
x = 39396
4080 : x = 24
x = 4080 : 24
x = 170
x + 678 = 2813 4529 + x = 7685 x - 358 = 4768 2495 - x = 698
x= 2135 x = 3157 x = 5126 x = 1797
x * 23 = 3082 36 * x = 27612 x : 42 = 936 4080 : x = 24
x = 134 x = 767 x = 39312 x = 170
Tìm x
x + 678 = 2813
4529 + x = 7685
x - 358 = 4768
2495 - x = 698
x × 23 = 3082
36 × x = 27612
x : 42 = 938
4080 : x = 24
Bài 2: Tìm x
a. x + 6734 = 3478 + 5782 b. 2054 + x = 4725 - 279
c. x - 3254 = 237 x 145 d. 124 - x = 44658 : 54
Bài 1:
2135
3156
5126
1797
134
767
39396
170
Bài 2:
a, 2526
b, 2392
c, 37619
d, -703