Question

Решите уравнение: а) 2х+х-8=9, б) 6+(2х+1)=10.

Answer 1

а) 2x + x - 8 = 9
2x + x = 9 + 8
3x = 17
x= 17÷3
x = 17/3 = 5 2/3

b) 6 + (2x + 1) = 10
6 + 2x + 1 = 10
7 + 2x = 10
2x = 10-7
2x = 3
x = 3:2
x = 1,5