7(5+x)=21

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Solution for 7(5+x)=21 equation: 



7(5+x)=21

We move all terms to the left:

7(5+x)-(21)=0

We add all the numbers together, and all the variables

7(x+5)-21=0

We multiply parentheses

7x+35-21=0

We add all the numbers together, and all the variables

7x+14=0

We move all terms containing x to the left, all other terms to the right

7x=-14

x=-14/7

x=-2

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