7a=40-3a

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Solution for 7a=40-3a equation: 


Simplifying
7a = 40 + -3a

Solving
7a = 40 + -3a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '3a' to each side of the equation.
7a + 3a = 40 + -3a + 3a

Combine like terms: 7a + 3a = 10a
10a = 40 + -3a + 3a

Combine like terms: -3a + 3a = 0
10a = 40 + 0
10a = 40

Divide each side by '10'.
a = 4

Simplifying
a = 4

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