Question

Resolva as Equações
3X-64= -100
2X +3X+4= 189
5(X+7)-2X=23

Answer 1

1)3x-64= -100
3x =-100+64
3x= -36
x= $\frac{-36}{3}$
x= -12

2) 2x + 3x +4=189
5x = 189-4
5x= 185
$x=\frac{185}{5}$
X=37



3) 5(x+7)-2x=23
5x + 35 -2x= 23
3x=23-35
3x=-12$x= \frac{-12}{3}$
x= -4