2a+5-(-a-7)=48

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Solution for 2a+5-(-a-7)=48 equation:


Simplifying
2a + 5 + -1(-1a + -7) = 48

Reorder the terms:
2a + 5 + -1(-7 + -1a) = 48
2a + 5 + (-7 * -1 + -1a * -1) = 48
2a + 5 + (7 + 1a) = 48

Reorder the terms:
5 + 7 + 2a + 1a = 48

Combine like terms: 5 + 7 = 12
12 + 2a + 1a = 48

Combine like terms: 2a + 1a = 3a
12 + 3a = 48

Solving
12 + 3a = 48

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + 3a = 48 + -12

Combine like terms: 12 + -12 = 0
0 + 3a = 48 + -12
3a = 48 + -12

Combine like terms: 48 + -12 = 36
3a = 36

Divide each side by '3'.
a = 12

Simplifying
a = 12

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