a+20-5a+(-7)=

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Solution for a+20-5a+(-7)= equation:


Simplifying
a + 20 + -5a + (-7) = 0
a + 20 + -5a + -7 = 0

Reorder the terms:
20 + -7 + a + -5a = 0

Combine like terms: 20 + -7 = 13
13 + a + -5a = 0

Combine like terms: a + -5a = -4a
13 + -4a = 0

Solving
13 + -4a = 0

Solving for variable 'a'.

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

Add '-13' to each side of the equation.
13 + -13 + -4a = 0 + -13

Combine like terms: 13 + -13 = 0
0 + -4a = 0 + -13
-4a = 0 + -13

Combine like terms: 0 + -13 = -13
-4a = -13

Divide each side by '-4'.
a = 3.25

Simplifying
a = 3.25

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