7a-(2a-7)=13

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Solution for 7a-(2a-7)=13 equation:


Simplifying
7a + -1(2a + -7) = 13

Reorder the terms:
7a + -1(-7 + 2a) = 13
7a + (-7 * -1 + 2a * -1) = 13
7a + (7 + -2a) = 13

Reorder the terms:
7 + 7a + -2a = 13

Combine like terms: 7a + -2a = 5a
7 + 5a = 13

Solving
7 + 5a = 13

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + 5a = 13 + -7

Combine like terms: 7 + -7 = 0
0 + 5a = 13 + -7
5a = 13 + -7

Combine like terms: 13 + -7 = 6
5a = 6

Divide each side by '5'.
a = 1.2

Simplifying
a = 1.2

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