Math, asked by aashi9671, 1 year ago

Exercis.
1. Solve and check, whether
not
(a) 3x - 9 = 12​

Answers

Answered by piyushrock9
20

Answer:

3x - 9 = 12

3x =12+9

3x =21

x = 21÷3

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Answered by shriya164950
15

Answer:

Step-by-step explanation:

3x-9=12

3x=12+9

3x=21

x=21/3

x=7

checking

3x-9=12

3*7-9=12

21-9=12

the equation is correct

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