Question

х+( x-4) + 18= 40
Допоможіть

Answer 1

х + (x - 4) + 18 = 40

x + x - 4 + 18 = 40

2x + 14 = 40

2x = 40 - 14

2x = 26

x = 26 : 2

x = 13

Ответ: 13.