4a+1=2a+21

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Solution for 4a+1=2a+21 equation:


Simplifying
4a + 1 = 2a + 21

Reorder the terms:
1 + 4a = 2a + 21

Reorder the terms:
1 + 4a = 21 + 2a

Solving
1 + 4a = 21 + 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.
1 + 4a + -2a = 21 + 2a + -2a

Combine like terms: 4a + -2a = 2a
1 + 2a = 21 + 2a + -2a

Combine like terms: 2a + -2a = 0
1 + 2a = 21 + 0
1 + 2a = 21

Add '-1' to each side of the equation.
1 + -1 + 2a = 21 + -1

Combine like terms: 1 + -1 = 0
0 + 2a = 21 + -1
2a = 21 + -1

Combine like terms: 21 + -1 = 20
2a = 20

Divide each side by '2'.
a = 10

Simplifying
a = 10

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