Question

resolva as equações
a) 5x-2 (x+4)=11
b) 12+3x-5 (2x-1)=2-3x

Answer 1

a) 5x-2 (x+4)=11
5x-2x+8=11
3x=11-8
3x=3
x=1

b)12+3x-5 (2x-1)=2-3x
12+3x-10x+5= -3x -3x+10x
15= 4x
x= 15/4