4a-2(a-9)=23

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Solution for 4a-2(a-9)=23 equation:


Simplifying
4a + -2(a + -9) = 23

Reorder the terms:
4a + -2(-9 + a) = 23
4a + (-9 * -2 + a * -2) = 23
4a + (18 + -2a) = 23

Reorder the terms:
18 + 4a + -2a = 23

Combine like terms: 4a + -2a = 2a
18 + 2a = 23

Solving
18 + 2a = 23

Solving for variable 'a'.

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

Add '-18' to each side of the equation.
18 + -18 + 2a = 23 + -18

Combine like terms: 18 + -18 = 0
0 + 2a = 23 + -18
2a = 23 + -18

Combine like terms: 23 + -18 = 5
2a = 5

Divide each side by '2'.
a = 2.5

Simplifying
a = 2.5

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