a) Ta có: 302^(2x-6) +45 = 46
=> 302^(2x-6) = 1 = 302^0
=> 2x-6 = 0
=> 2x = 6
=> x = 3
b) Ta có: (x+1)+(x+2)+(x+3)+....+(x+100)=5950
=> 100x+ (1+2+3+4+...+100) = 5950
=> 100x + 5050 = 5950
=> 100x = 900
=> x = 9
Nhấn đúng cho mk nha!!!!!!!!
a) Ta có: 302^(2x-6) +45 = 46
=> 302^(2x-6) = 1 = 302^0
=> 2x-6 = 0
=> 2x = 6
=> x = 3
b) Ta có: (x+1)+(x+2)+(x+3)+....+(x+100)=5950
=> 100x+ (1+2+3+4+...+100) = 5950
=> 100x + 5050 = 5950
=> 100x = 900
=> x = 9
Nhấn đúng cho mk nha!!!!!!!!
tim x dua vao quan he uoc boi:
tim so tu nhien x sao cho x-1 la uoc cua 12
tim so tu nhien x sao cho 2x+1 la uoc cua 28
tim so tu nhien x sao cho x+15 la boi cua x+3
tim cac so nguyen x,y sao cho (x+1)(y-2)=3
tim so nguyen x sao cho(x+2).(y-1)=2
tim so nguyen to x vua la uoc cua 275 vua la uoc cua 180
tim so nguyen to x,y biet x+y=12 va UCLL (x:y)=5
tim so tu nhien x,y biet x+y=32 va UCLL (x:y)=8
tim so tu nhien x biet x chia het cho10; xchia het cho12; x chia het cho15 va 100<x<150
tim so x nho nhat khac 0b biet x chia het cho 24 va 30
40 chia het cho x . 56 chia het cho x va x>6
tin so tu nhien x biet:(1/1*2*3+1/2*3*4+...+1/8*9*10)x=22/45
bai 1 : tim so tu nhien x , biet :
a, 219 - 7(x+1) =100
b, (3x - 6 ) . 3 = 24
tim so tu nhien x biet (1/1.2.3+1/2.3.4+...+1/8.9.10)x=22/45
tìm so tu nhien x biet (1/1.2.3 + 1/2.3.4+...+ 1/8.9.10).x=23/45
Tim so tu nhien x biet (1/1.2.3+1/2.3.4+...1/8.9.10)x=22/45
tim so tu nhien x biet (1/1.2.3+1/2.3.4+...+1/8.9.10)x=22/45
tim so tu nhien x biet (1/1.2.3 + 1/2.3.4 +...+ 1/8.9.10).x =23/45
tim so tu nhien x biet
219-7(x+1)=100 (3x-6).3=3^4