7a-(3a-4)=16

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Solution for 7a-(3a-4)=16 equation:


Simplifying
7a + -1(3a + -4) = 16

Reorder the terms:
7a + -1(-4 + 3a) = 16
7a + (-4 * -1 + 3a * -1) = 16
7a + (4 + -3a) = 16

Reorder the terms:
4 + 7a + -3a = 16

Combine like terms: 7a + -3a = 4a
4 + 4a = 16

Solving
4 + 4a = 16

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + 4a = 16 + -4

Combine like terms: 4 + -4 = 0
0 + 4a = 16 + -4
4a = 16 + -4

Combine like terms: 16 + -4 = 12
4a = 12

Divide each side by '4'.
a = 3

Simplifying
a = 3

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