Question

Resolva as Questões

k)x+400=2450 l)3x+400=850

M)4x-15=2x+7 N)4x=2x+22

o)6x+3 (3-x)=4-2 (2x-5)

p)6m+10=4m+50 q)3x+3=12

r)6=2+X s)x+10=25

t)4x=200 u)8x=14+4x+6=40

v)12-8=40 w)4 (x-5)+10=5(7+2x)

x)5 (-2x-1)=-14+7 (3+x)

y)-2 (1-x)-2=3 (1+x)-5

z)x+x+1=421​

Answer 1

Resposta:

Explicação passo-a-passo:

k)x+400=2450

x=2450-400

x-2050

-----------------------

l)3x+400=850

3x=850-400

x=450/3

x=150

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M)4x-15=2x+7

4x-2x=7+15

2x=22

x=22/2

x=11

--------------------

N)4x=2x+22

4x-2x=22

2x=22

x=11

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o)6x+3 (3-x)=4-2 (2x-5)

6x+9-3x=4-4x+10

6x-3x+4x=4+10-9

7x=5

x=5/7

----------------------

p)6m+10=4m+50

6m-4m=50-10

2m=40

m=40/2

m=20

------------------

q)3x+3=12

3x=12-3

x=9/3

x=3

Obs: agora vou deixar vc praticar as outras