a) x - 3 = 12
x = 12 + 3
x = 15
b) x + 5 = 43
x = 43 - 5
x = 38
c) x : 2 = 60
x = 60 x 2
x = 120
d) x x 3 = 30
x = 30 : 3
x = 10
nha
a ) x - 3 = 12
x = 12 + 3
x = 15
b ) x + 5 = 43
x = 43 - 5
x = 38
c ) x : 2 = 60
x = 60 x 2
x = 120
d ) X x 3 = 30
X = 30 : 3
X = 10
a, x - 3 =12
=> x = 12 - 3
=> x = 9
b, x + 5 = 43
=> x = 43 - 5
=> x = 38
c, x : 2 = 60
=> x = 60 . 2
=> x = 120
d, x . 3 = 30
=> x = 30 : 3
=> x = 10
a) x - 3 = 12 b) x + 5 = 43 c) x : 2 = 60 d) x * 3 = 30
x = 12 + 3 x = 43 - 5 x = 60 * 2 x = 30 : 3
x = 15 x = 38 x = 120 x = 10
a, x=12+3;x=15
b, x=43-5;x=38
c, x=60*2;x=120
d,x=30;3:x=10
mấy con này dễ mà bạn
a) x - 3 = 12
x = 12 + 3
x = 15
b) x + 5 = 43
x = 43 - 5
x = 38
c) x : 2 = 60
x = 60 x 2
x = 120
d) x . 3 = 30
x = 30 : 3
x = 10
x-3=12
x=12+3
x=15
x+5=43
x=43-5
x=38
x:2=60
x=60x2
x=120
x.3=30
x=30:3
x=10
a) x - 3 = 12
x = 12 + 3
x = 15
b) x + 5 = 43
x = 43 - 5
x = 38
c) x x 2 = 60
x = 60 x 2
x = 120
d) x x 3 = 30
x = 30 : 3
x = 10
a) X - 3 = 12
X = 12 + 3
X = 15
b) X + 5 = 43
X = 43 - 5
X = 38
c) X : 2 = 60
X = 60 x 2
X = 180
d) X x 3 = 30
X = 30 : 3
X = 10