Question

Resolva as equações do 1 grau:

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)=

Answer 1

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

7x-35=3x+3

4x=38

x=38/4

x= 9,5

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

3x-6=-4x+3

7x=9

x=9/7

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

2x+2-x-1=0

x=-1

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

5x+5-3x+2=0

2x=-7

x=7/2

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

13+8x-4=5x+10

3x=1

x=1/3