Question

Resolva as equações:

a) 3-7(1-2x)=5-(x+9)
b) (1+3x)-(1-2x)+(-11-7x)=5
c) 2.(1-5y)+3(-1-y)-4(-7+2y)=-y
d) x-3(4-x)=7x-(1-x)

Answer 1

A) 2,5789...
B) 2,666...
C) 1,421...
D) 2,75