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15=1+7(x-19)
We move all terms to the left:
15-(1+7(x-19))=0
We calculate terms in parentheses: -(1+7(x-19)), so:We get rid of parentheses
1+7(x-19)
determiningTheFunctionDomain 7(x-19)+1
We multiply parentheses
7x-133+1
We add all the numbers together, and all the variables
7x-132
Back to the equation:
-(7x-132)
-7x+132+15=0
We add all the numbers together, and all the variables
-7x+147=0
We move all terms containing x to the left, all other terms to the right
-7x=-147
x=-147/-7
x=+21
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