.3(180-y)=2(90-y)

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Solution for .3(180-y)=2(90-y) equation: 



.3(180-y)=2(90-y)

We move all terms to the left:

.3(180-y)-(2(90-y))=0

We add all the numbers together, and all the variables

.3(-1y+180)-(2(-1y+90))=0

We multiply parentheses

-0.3y-(2(-1y+90))+54=0



We calculate terms in parentheses: -(2(-1y+90)), so:

2(-1y+90)

We multiply parentheses

-2y+180

Back to the equation:

-(-2y+180)



We get rid of parentheses

-0.3y+2y-180+54=0

We add all the numbers together, and all the variables

1.7y-126=0

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

1.7y=126

y=126/1.7

y=74+0.2/1.7

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