Question

Resolva as equações abaixo, isolando a)4x+2=x+11 b)2y+5=3y+6. C)y+7=3y+27 d)a-1=4a+8. E)5y-3=2y+3

Answer 1

a) 4x-x=11-2 b) 2y+5=3y+6 c) y+7=3y+27
3x=9 2y-3y=6-5 y-3y=27-7
x=9/3 -y = 1 . (-1) -2y=20 . (-1)
x=3 y= -1 2y= -20
y= -20/2
d) a-1=4a+8 e) 5y-3=2y+3 y= -10
a-4a=8+1 5y-2y=3+3
-3a=9 . (-1) 3y=6
3a= -9 y=6/3
a=-9/3 y=2
a= -3