Question

Решите уравнение 7(x – 5) + 1 = 2 – 3(2x –1).

Answer 1

7*x-7*5+1 = 2-3*(2*x-1)
7*x-7*5+1 = 2-3*2*x+3*1
-34 + 7*x = 2-3*2*x+3*1
-34 + 7*x = 5 - 6*x
7*x = 39 - 6*x
13*x = 39
x = 39 / (13)
x = 3

Answer 2

7(x-5)+1=2-3(2x-1)
7(x-5)+1-2+3(2x-1)=0
7(x-5)-1+3(2x-1)=0
(7x-35)-1+(6x-3)=0
7x-35-1+6x-3=0
13x-39=0
13x=39
x=39:13
x=3
Ответ: x=3