Question

a)7x - 3 = 2x + 12
b)2.(x + 3) = 8
c) 7.(x - 1) = 5.(x+3)
d)3.(m + 3) = 7.(m + 2)
e)y + 7 = 5
f)2.(4y + 3) = 16 - 2y
g)4.(2x - 3) -2.(x + 5) = 2

Answer 1

Resposta:

a)7x-2x=12+3=5x=15=x=3 b)2x+6=8=2x=8-6=2x=2=x=1 c)7x-7=5x+15=7x-5x=15+7=2x=22=x=11 d)3m+9=7m+14=3m-7m=14-9=-4m=5=m=-5/4 e)y=5-7=y=2 g)8x-12-2x-10=2=6x=12+10+2=24=6x=24=x=4 f)8y+6=16-2y=-8y-2y=16-6=-10y=10=y=-1