7a+3b=-20

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Solution for 7a+3b=-20 equation: 


Simplifying
7a + 3b = -20

Solving
7a + 3b = -20

Solving for variable 'a'.

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

Add '-3b' to each side of the equation.
7a + 3b + -3b = -20 + -3b

Combine like terms: 3b + -3b = 0
7a + 0 = -20 + -3b
7a = -20 + -3b

Divide each side by '7'.
a = -2.857142857 + -0.4285714286b

Simplifying
a = -2.857142857 + -0.4285714286b

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