Question

43 + (x -7) =90 find the value of x

Answer 1

43 + x - 7 = 90

Subtract 36 (-43 +7) from each side

x = 54

Answer 2

43 + (x-7) = 90
43x - 301 = 90
        +301    +301
43x = 391
43        43

x = 9.09 or 9

I hope this helps :)