Question

5 (x+ 7) - 10 = 2³ . 5

Answer 1

5 ( x + 7 ) - 10 =  2³ . 5

 5 ( x + 7 ) - 10 = 8 . 5

5 ( x + 7 ) - 10 = 40

5 ( x + 7 ) = 40 + 10

5 ( x + 7 ) = 50

x + 7 = 50 : 5

x + 7 = 10

x = 10 - 7

x = 3

 

Answer 2

5 (x+ 7) - 10 = 40

5 (x+ 7) =40+10

5 (x+ 7)=50

    x+7=50:5

    x+7=10

    x=10-7

    x=3