Question

Resolva as equações:
a) 4x+8=3x-5
b) 3a-4=a+1
c) 9y-11=-2
d) 5x-1=8x--5

Answer 1

a) 4x-3x=5-8
x=-3
b) 3a-a=1-4
2a=-3
a=-3/2
c) 9y=-2 +11
9y=9
y=9/9 =
y=1
d) 5x-8x= -5 +1
-3x=-4 -(1x)
+3×=+4
×=4/3