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=-13
b) 3a - 4 =a + 1
3a - a = 1 +5
2a = 6
a = 3
c) 9y -11 = -2
9y = -2 +11
9y = 9
y = 1
d) 5x - 1 = 8x + 5
5x - 8x = 5 +1
-3x = 6
x -2

Answer 2

a)4x+8=3x-5
4x-3x+8=-5
x=-5-8
x=-13

b)3a-a=1+4
2a=5
a=5/2

c)9y=-2+11
9y=9
y=9/9
y=1
d)
5x-8x=5+1
-3x=6
x=6/-3
x=-2