Question

1) Resolva as equações
a) 7x-6=3-5x
b)4 ( x - 5 ) =3 ( x- 2)
c) 3n + 11=2 ( 2-7)

Answer 1

a) 7x-6=3-5x

7x+5x=3+6

12x=9

x=9/12

x=0,75

b)4*(x-5)=3(x-2)

4x-20=3x-6

4x-3x=6+20

x=26

c) 3n+11=2*(2-7)

3n+11=4-14

3n=4-14-11

3n=-21

n=-21/3

n=-7