2(a-1)+5x=21

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Solution for 2(a-1)+5x=21 equation:


Simplifying
2(a + -1) + 5x = 21

Reorder the terms:
2(-1 + a) + 5x = 21
(-1 * 2 + a * 2) + 5x = 21
(-2 + 2a) + 5x = 21

Solving
-2 + 2a + 5x = 21

Solving for variable 'a'.

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

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

Reorder the terms:
-2 + 2 + 2a + 5x = 21 + 2

Combine like terms: -2 + 2 = 0
0 + 2a + 5x = 21 + 2
2a + 5x = 21 + 2

Combine like terms: 21 + 2 = 23
2a + 5x = 23

Add '-5x' to each side of the equation.
2a + 5x + -5x = 23 + -5x

Combine like terms: 5x + -5x = 0
2a + 0 = 23 + -5x
2a = 23 + -5x

Divide each side by '2'.
a = 11.5 + -2.5x

Simplifying
a = 11.5 + -2.5x

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