Question

alguém me ajuda por favor ​

Answer 1

Resposta:

1-a)x=12

b)y=4

c)z=28

d)w=18

e)x= -15

f)x=10

2-a)x=5

b)x=3

c)x=1

d)x=2

Explicação passo-a-passo:

1-a)x.6=24.3

6x=72

x=72/6

x=12

b)y.50=8.25

50y=200

y=200/50

y=4

c)z.1=4.7

1z=28

z=28/1

z=28

d)w.7=6.21

7w=126

w=126/7

w=18

e)x.(-11)=55.3

-11x=165

x=165/-11

x= -15

f)14.(x+2)=4.42

14x+28=168

14x=168-28

14x=140

x=140/14

x=10

2-a)2.(x+7)=4.(11-x)

2x+14=44-4x

2x+4x=44-14

6x=30

x=30/6

x=5

b)3.(x+3)=2.(12-x)

3x+9=24-2x

3x+2x=24-9

5x=15

x=15/5

x=3

c)18.x=2.(8+x)

18x=16+2x

18x-2x=16

16x=16

x=16/16

d) -1.3x=3(2-2x)

-3x=6-6x

-3x+6x=6

3x=6

x=6/3

x=2