Question

a) 5(3x-2)-6 (8x -13 )-13x =16 (8-3)-62
b) 2(3x+4)-5 (2x - 3) +7=7(x-1)+4
c) 2 (3x -4) +5 (6x -7)-7x =16 (x+15)-10
va rog urgent​

Answer 1

Explicație pas cu pas:

A) 15x-10-48+78-13x = 128-48-62

2x-58+78= 80-62

2x+20 = 18

2x= - 2

X= - 1

B) 6x +8-10x+15+7=7x-7+4

- 4x +30=7x-3

Trecem 7x in stanga cu semnul schimbat

- 11x =-33

- X= - 11 ==> x=11

C) 6x-8 +30x-35-7x=16x+240-10

36x-7x - 43= 16x + 230

29x-43= 16 x +230

29x-16x = 230 +43

13x=273

X=21