Question

resolva:
a) (3X-4)+(-2X+11)=0
b) (3X-4)-(-2X+11)=0
c) 5X-8 (3X+9)=-(X+2)
d) 8+(X-3)=6-(X+8)
alguém me ajuda por favor?

Answer 1

Resposta:

a) 3x-4-2×+11=0 = 3x-2×=+4-11 = x=-7

b) 3x-4+2×-11=0 = 3×+2×=+4+11 = 5x=15 = ×=15/5 = ×=3

c)5×-24×-72=-×-2 = 5×-24×+×=-2+72 = 20×=70 = ×=70/20 = (corta os zeros) x=3,5

d)8+×-3=6-×-8 = +×+×=6-8-8+3 = 2×=7 = x=7/2 = x=3,5