100-300+4(20x+25)=100+7(10x+100)

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Solution for 100-300+4(20x+25)=100+7(10x+100) equation: 



100-300+4(20x+25)=100+7(10x+100)

We move all terms to the left:

100-300+4(20x+25)-(100+7(10x+100))=0

We add all the numbers together, and all the variables

4(20x+25)-(100+7(10x+100))-200=0

We multiply parentheses

80x-(100+7(10x+100))+100-200=0



We calculate terms in parentheses: -(100+7(10x+100)), so:

100+7(10x+100)

determiningTheFunctionDomain
7(10x+100)+100

We multiply parentheses

70x+700+100

We add all the numbers together, and all the variables

70x+800

Back to the equation:

-(70x+800)



We add all the numbers together, and all the variables

80x-(70x+800)-100=0

We get rid of parentheses

80x-70x-800-100=0

We add all the numbers together, and all the variables

10x-900=0

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

10x=900

x=900/10

x=90

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