(21.75)(23.34)=7X+5(x+4)+6x+10(x+7)+15(x+7)+123.5

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Solution for (21.75)(23.34)=7X+5(x+4)+6x+10(x+7)+15(x+7)+123.5 equation: 



(21.75)(23.34)=7X+5(X+4)+6X+10(X+7)+15(X+7)+123.5

We move all terms to the left:

(21.75)(23.34)-(7X+5(X+4)+6X+10(X+7)+15(X+7)+123.5)=0

We add all the numbers together, and all the variables

-(7X+5(X+4)+6X+10(X+7)+15(X+7)+123.5)+507.645=0



We calculate terms in parentheses: -(7X+5(X+4)+6X+10(X+7)+15(X+7)+123.5), so:

7X+5(X+4)+6X+10(X+7)+15(X+7)+123.5

We add all the numbers together, and all the variables

13X+5(X+4)+10(X+7)+15(X+7)+123.5

We multiply parentheses

13X+5X+10X+15X+20+70+105+123.5

We add all the numbers together, and all the variables

43X+318.5

Back to the equation:

-(43X+318.5)



We get rid of parentheses

-43X-318.5+507.645=0

We add all the numbers together, and all the variables

-43X+189.145=0

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

-43X=-189.145

X=-189.145/-43

X=4+14.9737991266/37.5545851528

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