(2a*4)+7a=45

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Solution for (2a*4)+7a=45 equation: 



(2a*4)+7a=45

We move all terms to the left:

(2a*4)+7a-(45)=0

We add all the numbers together, and all the variables

(+2a*4)+7a-45=0

We add all the numbers together, and all the variables

7a+(+2a*4)-45=0

We get rid of parentheses

7a+2a*4-45=0

Wy multiply elements

7a+8a-45=0

We add all the numbers together, and all the variables

15a-45=0

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

15a=45

a=45/15

a=3

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