7a+4=20

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Solution for 7a+4=20 equation: 


Simplifying
7a + 4 = 20

Reorder the terms:
4 + 7a = 20

Solving
4 + 7a = 20

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + 7a = 20 + -4

Combine like terms: 4 + -4 = 0
0 + 7a = 20 + -4
7a = 20 + -4

Combine like terms: 20 + -4 = 16
7a = 16

Divide each side by '7'.
a = 2.285714286

Simplifying
a = 2.285714286

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