30*2+40*2=c*2

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Solution for 30*2+40*2=c*2 equation: 



30*2+40*2=c*2

We move all terms to the left:

30*2+40*2-(c*2)=0

We add all the numbers together, and all the variables

-(+c*2)+30*2+40*2=0

We add all the numbers together, and all the variables

-(+c*2)+140=0

We get rid of parentheses

-c*2+140=0

Wy multiply elements

-2c+140=0

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

-2c=-140

c=-140/-2

c=+70

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