2a-4=2(a+1)+7a+2

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Solution for 2a-4=2(a+1)+7a+2 equation:


Simplifying
2a + -4 = 2(a + 1) + 7a + 2

Reorder the terms:
-4 + 2a = 2(a + 1) + 7a + 2

Reorder the terms:
-4 + 2a = 2(1 + a) + 7a + 2
-4 + 2a = (1 * 2 + a * 2) + 7a + 2
-4 + 2a = (2 + 2a) + 7a + 2

Reorder the terms:
-4 + 2a = 2 + 2 + 2a + 7a

Combine like terms: 2 + 2 = 4
-4 + 2a = 4 + 2a + 7a

Combine like terms: 2a + 7a = 9a
-4 + 2a = 4 + 9a

Solving
-4 + 2a = 4 + 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
-4 + 2a + -9a = 4 + 9a + -9a

Combine like terms: 2a + -9a = -7a
-4 + -7a = 4 + 9a + -9a

Combine like terms: 9a + -9a = 0
-4 + -7a = 4 + 0
-4 + -7a = 4

Add '4' to each side of the equation.
-4 + 4 + -7a = 4 + 4

Combine like terms: -4 + 4 = 0
0 + -7a = 4 + 4
-7a = 4 + 4

Combine like terms: 4 + 4 = 8
-7a = 8

Divide each side by '-7'.
a = -1.142857143

Simplifying
a = -1.142857143

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