Question

resolva as equações
a) 7x=24-5x
b) 10x-11=12x+21
c) 4x-4=0
d)3(x-2)-2(x+3)=8

Answer 1

a) 7x = 24 -5x

7x +5x = 24

12x = 24

x = 24/12

x = 2

...

b) 10x-11=12x+21

10x -12x = 21 +11

-2x = 32

x = 32 / -2

x = -16

...

c) 4x-4=0

4x = 4

x = 4/4

x = 1

...

d) 3(x -2) -2(x +3) = 8

3x -6 -2x -6 = 8

3x -2x = 8 +6 +6

x = 8 +12

x = 20