Question

Olá algm me ajuda? prfv é pra hj​

Answer 1

Resposta:

a)5x=25

$x=\frac{25\\}{5}$

x=5

b)2x + 16 = 18

2x=18-16

2x=2

x=$\frac{2}{2}$

x= 1

c)3x-21 = x+ 9

3x-x=9+21

2x=30

$x=\frac{30}{2}$

x = 15

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

2x-6=-3x

2x+3x=6

5x=6

$x=\frac{5}{6}$

e)4x+24=3(x+12)

4x+24=3x+36

4x- 3x= 36- 24

x=12