2.1a+.7=7

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Solution for 2.1a+.7=7 equation: 


Simplifying
2.1a + 0.7 = 7

Reorder the terms:
0.7 + 2.1a = 7

Solving
0.7 + 2.1a = 7

Solving for variable 'a'.

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

Add '-0.7' to each side of the equation.
0.7 + -0.7 + 2.1a = 7 + -0.7

Combine like terms: 0.7 + -0.7 = 0.0
0.0 + 2.1a = 7 + -0.7
2.1a = 7 + -0.7

Combine like terms: 7 + -0.7 = 6.3
2.1a = 6.3

Divide each side by '2.1'.
a = 3

Simplifying
a = 3

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