70-5(x-3)=45
5(x-3)=70-45
5(x-3)=25
x-3=25/5
x-3=5
x=5+3
x=8
70 - 5 . ( x - 3 ) = 45
5 . ( x - 3 ) = 70 - 45 = 25
x - 3 = 25 : 5 = 5
x = 5 + 3
x = 8 .
10 + 2 . x = 45 : 43
10 + 2 .x = 42 = 16
2 . x = 16 - 10
2 . x = 6
x = 6 : 2
x = 3 .
70 - 5.(x - 3) = 45
5.(x - 3) = 70 - 45
5.(x - 3) = 25
x - 3 = 25 : 5
x - 3 = 5
x = 5 + 3
x = 8
10 + 2.x = 45 : 43
10 + 2.x = 16
2.x = 16 - 10
2.x = 6
x = 6 : 2
x = 3
70 - 5 . ( x - 3 ) = 45
5 . ( x - 3 ) = 70 - 45
5 . ( x - 3 ) = 25
(x - 3 ) = 25 : 5
x - 3 = 5
x = 5 + 3
x = 8
10 + 2 . x = 45 : 43
10 + 2 . x = 42
10 + 2 . x = 16
2 . x = 10 + 16
2 . x = 26
x = 26 : 2
x = 13