21a+28=-35

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Solution for 21a+28=-35 equation: 


Simplifying
21a + 28 = -35

Reorder the terms:
28 + 21a = -35

Solving
28 + 21a = -35

Solving for variable 'a'.

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

Add '-28' to each side of the equation.
28 + -28 + 21a = -35 + -28

Combine like terms: 28 + -28 = 0
0 + 21a = -35 + -28
21a = -35 + -28

Combine like terms: -35 + -28 = -63
21a = -63

Divide each side by '21'.
a = -3

Simplifying
a = -3

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