3a-4b-(-7b)+5a=

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Solution for 3a-4b-(-7b)+5a= equation:


Simplifying
3a + -4b + -1(-7b) + 5a = 0

Remove parenthesis around (-7b)
3a + -4b + -1 * -7b + 5a = 0

Multiply -1 * -7
3a + -4b + 7b + 5a = 0

Reorder the terms:
3a + 5a + -4b + 7b = 0

Combine like terms: 3a + 5a = 8a
8a + -4b + 7b = 0

Combine like terms: -4b + 7b = 3b
8a + 3b = 0

Solving
8a + 3b = 0

Solving for variable 'a'.

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

Add '-3b' to each side of the equation.
8a + 3b + -3b = 0 + -3b

Combine like terms: 3b + -3b = 0
8a + 0 = 0 + -3b
8a = 0 + -3b
Remove the zero:
8a = -3b

Divide each side by '8'.
a = -0.375b

Simplifying
a = -0.375b

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