3/10+r=7/10

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Solution for 3/10+r=7/10 equation: 



3/10+r=7/10

We move all terms to the left:

3/10+r-(7/10)=0

We add all the numbers together, and all the variables

r+3/10-(+7/10)=0

We get rid of parentheses

r+3/10-7/10=0

We multiply all the terms by the denominator


r*10+3-7=0

We add all the numbers together, and all the variables

r*10-4=0

Wy multiply elements

10r-4=0

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

10r=4

r=4/10

r=2/5

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