2(a*10)=7(a+5)+4

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Solution for 2(a*10)=7(a+5)+4 equation: 



2(a*10)=7(a+5)+4

We move all terms to the left:

2(a*10)-(7(a+5)+4)=0

We add all the numbers together, and all the variables

2(+a*10)-(7(a+5)+4)=0

We multiply parentheses

20a-(7(a+5)+4)=0



We calculate terms in parentheses: -(7(a+5)+4), so:

7(a+5)+4

We multiply parentheses

7a+35+4

We add all the numbers together, and all the variables

7a+39

Back to the equation:

-(7a+39)



We get rid of parentheses

20a-7a-39=0

We add all the numbers together, and all the variables

13a-39=0

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

13a=39

a=39/13

a=3

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