Question

Resolva a)(x-3)-3 (5-x)
b)-3 (z+1)+z (2+3)

Answer 1

(x-3)-3 (5-x)

x-3-15+3x

4x-18

4x=18

x=18/4

-3 (z+1)+z(2+3)

-3z-3+2z+3z

2z-3=0

2z=3

z=3/2