Question

Resolva as equações abaixo
a)10x+16=14x+8
b)2(x-3)=-3(x-3)
c)4(5x-3)-64(3-x)-3(12x-1)=96
d)5(x+1)+6(x+2)=9(x+3)
e)5x-40=2-x

Answer 1

a)
10x+16=14x+8
10x-14x=8-16
-4x=-8
x=-8/-4
x=2

b)2(x-3)=-3(x-3)
2x-6=-3x+9
2x+3x=9+6
5x=15
x=15/5
x=3

c)
4(5x-3)-64(3-x)-3(12x-1)=96
20x-12-192+64x-36x+3=96
20x+64x-36x=96+12+192-3
48x=293
x=293/48

d)5(x+1)+6(x+2)=9(x+3)
5x+5+6x+12=9x+27
5x+6x-9x=27-5-12
2x=10
x=10/2
x=5

e)5x-40=2-x
5x+x=2+40
6x=42
x=42/6
x=7