Question

Rezolvați in multimea nr. întregi ecuatiile:
A. 4x-10 = 2x +20
B. 5x+4 = 3x -2
C.. -8x + 22 = 6x -6
D. 2x+40 = -2x +20
E. 3x-24 = 2x +10
F. -4x-10 = 2x -4 ​

Answer 1

A. 4x-10=2x+20

4x-2x=20+10

2x=30

x= 30:2

x=15

B. 5x-3x=-2-4

2x=-6

x=-3

C. -8x+2x=20-40

-6x=-60

x=-60:(-6)

x=10

D. 2x+2x=20-40

4x=-20

x=-20:4

x=-5

E. 3x-24=2x+10

3x-2x=10+24

x=34

F. -4x-2x=-4+10

-6x=6=> x=-1