Question

__________ is the variable in the equation 3×+7=18​

Answer 1

Answer:

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Step-by-step explanation:

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:

x is the variable of the eqation