Question

Resolva as equações a seguir:
a) 7m - 2+4= 10 + 5m=
b)22a = 2a+20=
c)3p - 18 = 3x+30=
d)7p + 9= 30=
e)5x-18 = 3x +30
g)4b+10 = 2b + 20=
h)13m -5 = 8=

Answer 1

Resposta:

a)7m-2+4=10+5m

7m-5m=10+2-4

2m=8

m=8/2

m=4

b)22a=2a+20

22a-2a=20

20a=20

a=20/20

a=1

c)3x-18=3x+30

3p-3x=30+18

3p-3x=48

d)7p+9=30

7p=30-9

7p=21

p=21/7

p=3

e)5x-18=3x+30

5x-3x=30+18

2x=48

x=48/2

x=24

f)nulo

g)4b+10=2b+20

4b-2b=20-10

2b=10

b=10/2

b=5

h)13m-5=8

13m=8+5

13m=13

m=13/13

m=1

Explicação passo-a-passo: