Question

e) 15 = x + 20
f) 9x – 2 = 4x + 18
g) 2x – 10 + 7x + 10 = 180
h) 7y - 10 = y + 50
i) 4x – 18+ 3x = 10
j) 2x + 5+x+ 7 = 18
k) 5x - 91 = 4x - 77
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Answer 1

Resposta:

e) 15 = x + 20

-x = 20 - 15

-x = 5

x = -5

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f)9x-2=4x+18

9x-4x=18+2

5x=20

X=20÷5

X=4

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g)2x-10+7x+10=180

2x+7x=180+10-10

9x=180

x= 180  

     9

x=20

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H)7y - 10 = y + 50

7y - y = 50 + 10

6y = 60

y = 60/6

y = 10

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I)4x-18+3x=10

4x+3x=10+18

7x=28

x=28/7

x=4

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J)2x+5+x+7=18

3x= 18-7-5

3x= 6

x=6/3

x=2

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K)5x - 91= 4x - 77

5x-4x=-77+91

X=14

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