2a-1=7a

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Solution for 2a-1=7a equation:


Simplifying
2a + -1 = 7a

Reorder the terms:
-1 + 2a = 7a

Solving
-1 + 2a = 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
-1 + 2a + -7a = 7a + -7a

Combine like terms: 2a + -7a = -5a
-1 + -5a = 7a + -7a

Combine like terms: 7a + -7a = 0
-1 + -5a = 0

Add '1' to each side of the equation.
-1 + 1 + -5a = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -5a = 0 + 1
-5a = 0 + 1

Combine like terms: 0 + 1 = 1
-5a = 1

Divide each side by '-5'.
a = -0.2

Simplifying
a = -0.2

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