7•x-5•x+4•x-38=15•2+4

Question

7•x-5•x+4•x-38=15•2+4

Answer 1

7x-5x+4x-38=15*2+4
6x-38=34
6x=72
x=12

Answer 2

7х - 5х + 4х - 38 = 34
6х = 38 + 34 = 72
х = 72 / 6 = 12