Question

решите уравнения х+(х+8)=11

Answer 1

х+(х+8)=11

х + х + 8 = 11

2x = 11 - 8.

2x = 3

x = 3 : 2

x = 1,5

проверка
1,5+(1,5+8)=11
1,5+9,5=11
11=11