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(2/3x+10)+(1/3x+5)=90
We move all terms to the left:
(2/3x+10)+(1/3x+5)-(90)=0
Domain of the equation: 3x+10)!=0
x∈R
Domain of the equation: 3x+5)!=0We get rid of parentheses
x∈R
2/3x+1/3x+10+5-90=0
We multiply all the terms by the denominator
10*3x+5*3x-90*3x+2+1=0
We add all the numbers together, and all the variables
10*3x+5*3x-90*3x+3=0
Wy multiply elements
30x+15x-270x+3=0
We add all the numbers together, and all the variables
-225x+3=0
We move all terms containing x to the left, all other terms to the right
-225x=-3
x=-3/-225
x=1/75
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