Question

resolva as equações,sendo u=q

a) 7(x-5)=3(x+1)

b) 3(x-2)=4(-x+3)

c) 2 (x+1)-(x-1)=0

d)5(x=+1)-3(x+2)=0

e)13+4(2x-1)=5(x+2)

 f)4(x+5)+3(x+2)=21

g)2(x+5)-3(5-x)=10

h)8(x-1)=8-4(2x-3)

Answer 1

a)7(x-5)=3(x+1)
7x-35=3x+3
7x-3x=3+35
4x=38
x=38/4
x=9.5

b) 3x-6= -4x+12
3x+4x=12+6
7x=18
x=18/7
x=2.57

c) 2x +2 -x+1=0
x=-1-2
x= -3

d)5x+5-3x-6=0
2x-1=0
x=1/2 ou 0.5

e)13+4(2x-1)=5(x+2)
13+8x-4=5x+2
8x-5x=2+4-13
3x=7
x=7/3
x=2.333333

f) 4x+20+3x+6=21
7x=-1+6
x=5/7
x=0.7

g)2x+10-15+3x=10
5x=-10+15+10
X=15/5
X=3

h)8(x-1)=8-4(2x-3)
8x-8=8-8x+12
x=12