Question

URGENTE: RESOLVA AS EQUAÇÕES

a) x - x/2 = 1
b) x/3 + x/2 = 15
c) 3x/2 - 5x + -7
d) x/2 + x/4 + x/2 = 4
e) 3/4x - 1/2x = -2

Answer 1

a) x-x/2=1        b) x/3+X/2=15

x-x/2-1=0              X/3+X/2-15=0

(2) (1) (2)               2X+3x-90=0

2x-x-2=0                 2x+3x=90

2x-x=2                    5x=90

x=2                           x=90/5

                                  x=18