Question

solve the following linear equations and verify your answer
3(x + 7) = 18
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Answer 1

Answer:

3(x+7)=18

⇒ 3x+21=18

⇒ 3x=18−21⇒ 3x=−3⇒ x=

3

−3

⇒ x=−1

Verification

⇒ 3(x+7)=18⇒3(−1+7)=18⇒3(6)=18

⇒ 18=18

Answer 2

Answer:

Given 3(x+7) = 18

= 3x + 21 = 18

= 3x = 18 - 21 = -3

= 3x = -3

= x = -1