Question

Resolva 20x-4=5× e 4(×-3)=2×-5

Answer 1

20X (-4)=50

20X=50+4

20X=54

X=54÷20

X=2,7

4 (X-3)=2X-5

X-2x=-5-4+3

-X=-6 . (-1)

X=6

Answer 2

20x-4=5x

20x-5x=4

15x=4

x=4/15



4(x-3)=2x-5

4x-2x=-5+12

2x=7

x=7/2


espero ter ajudado!