2a-7b=42

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Solution for 2a-7b=42 equation: 


Simplifying
2a + -7b = 42

Solving
2a + -7b = 42

Solving for variable 'a'.

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

Add '7b' to each side of the equation.
2a + -7b + 7b = 42 + 7b

Combine like terms: -7b + 7b = 0
2a + 0 = 42 + 7b
2a = 42 + 7b

Divide each side by '2'.
a = 21 + 3.5b

Simplifying
a = 21 + 3.5b

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