Question

Equações de 1°grau

a) 2 (x-3)-4 (-2-x)=0
b)-3 (x+1)=-6-2 (-x-3)
c) 18x-220=3x+5
d) 17x-186=3x+10

Obrigada.

Answer 1

A-) 2 (x-3)-4 (-2-x)=0
2x-6+8+4x=0
2x+4x=0+6-8
6x=-2
X=-1/3

B-)-3 (x+1)=-6-2 (-x-3
-3x-3=-6+6+3
-5x=15
-x=15/5
X=-3

C 18x-22=3x+5
18x-3x=5+220
15x=225
X=225/15
X=13

D 17x-186=3x+10
17x-3x=10+186
14x=196
X=15