Question

7. Resolva as seguintes equações:
a) 9x = 36
b) X-9=527
C) 100-y=12
e) 6x - 6 =12
d) 3x + 5 = 35​

Answer 1

Resposta:

a) $x=4$

b) $x=536$

c) $y=88$

d) $x=10$

e) $x=3$

Explicação passo-a-passo:

a)

$9x = 36\\x=36/9\\x=4$

b)

$x-9=527\\x=527+9\\x=536$

c)

$100-y=12\\-y+100=12\\-y=12-100\\-y=-88\\\frac{-y}{1}=\frac{-88}{1} \\y=88$

d)

$3x + 5 = 35​\\3x=35-5\\3x=30\\x=\frac{30}{3} \\x=10$

e)

$6x - 6 =12\\6x=12+6\\6x=18\\x=\frac{18}{6} \\x=3$

Answer 2

Resposta:

A)9x= 36

36/9= 4

x= 4

B)  x-9=527

   9+527= 536x

= 536

C) 100-y= 12

-y+100=12

-y+100-100=12-100= 88

-y= 88

-y/-1= -88/-1

y= 88

E) 6x-6=12

6x-6+6=12+6

6x=18

6x/6= 18/6

x= 3

D)  3x + 5 = 35

3x+5-5= 35-5

3x=30

3x/3= 30/3

x= 10