4-5(a+5)=2a

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Solution for 4-5(a+5)=2a equation:


Simplifying
4 + -5(a + 5) = 2a

Reorder the terms:
4 + -5(5 + a) = 2a
4 + (5 * -5 + a * -5) = 2a
4 + (-25 + -5a) = 2a

Combine like terms: 4 + -25 = -21
-21 + -5a = 2a

Solving
-21 + -5a = 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
-21 + -5a + -2a = 2a + -2a

Combine like terms: -5a + -2a = -7a
-21 + -7a = 2a + -2a

Combine like terms: 2a + -2a = 0
-21 + -7a = 0

Add '21' to each side of the equation.
-21 + 21 + -7a = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -7a = 0 + 21
-7a = 0 + 21

Combine like terms: 0 + 21 = 21
-7a = 21

Divide each side by '-7'.
a = -3

Simplifying
a = -3

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