Question

– Resolva as equações:
a) 3x – 2 = 4x + 9
b) 5x -3 + x = 2x + 9
c) 3 (2x – 1) = -2 ( x + 3)
d) 5x – 3( x +2) = 15

Answer 1

Resposta:

a)3x-4x=9+2

-x=11(-1)

x=11

b)5x+x-2x=9+3

4x=12

x=12÷4

x=3

c)6x-1=-2x-6

6x+2x=-6+1

8x=-5

x=-5÷8

x=-o,625

d)5x-3x-6=15

5x-3x=15+6

2x=21

x=21÷2

x=10,5