Question

resolva as equações
a)
$3(x - 1) + 5 = 7 - x$
b)
$x + 3 + x + 2 = 19$

Answer 1

A) 3 (x-1)+5=7-x
3x-3+5=7-x
3x+x=7+3-5
4x=5
X=5/4
B)x+3+x+2=19
x+x=19-3-2
2x=14
x=14/2
x=7