1+7a-5-2a=1+20(a+3)

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Solution for 1+7a-5-2a=1+20(a+3) equation:


Simplifying
1 + 7a + -5 + -2a = 1 + 20(a + 3)

Reorder the terms:
1 + -5 + 7a + -2a = 1 + 20(a + 3)

Combine like terms: 1 + -5 = -4
-4 + 7a + -2a = 1 + 20(a + 3)

Combine like terms: 7a + -2a = 5a
-4 + 5a = 1 + 20(a + 3)

Reorder the terms:
-4 + 5a = 1 + 20(3 + a)
-4 + 5a = 1 + (3 * 20 + a * 20)
-4 + 5a = 1 + (60 + 20a)

Combine like terms: 1 + 60 = 61
-4 + 5a = 61 + 20a

Solving
-4 + 5a = 61 + 20a

Solving for variable 'a'.

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

Add '-20a' to each side of the equation.
-4 + 5a + -20a = 61 + 20a + -20a

Combine like terms: 5a + -20a = -15a
-4 + -15a = 61 + 20a + -20a

Combine like terms: 20a + -20a = 0
-4 + -15a = 61 + 0
-4 + -15a = 61

Add '4' to each side of the equation.
-4 + 4 + -15a = 61 + 4

Combine like terms: -4 + 4 = 0
0 + -15a = 61 + 4
-15a = 61 + 4

Combine like terms: 61 + 4 = 65
-15a = 65

Divide each side by '-15'.
a = -4.333333333

Simplifying
a = -4.333333333

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