3=1.8+a+7

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Solution for 3=1.8+a+7 equation:


Simplifying
3 = 1.8 + a + 7

Reorder the terms:
3 = 1.8 + 7 + a

Combine like terms: 1.8 + 7 = 8.8
3 = 8.8 + a

Solving
3 = 8.8 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
3 + -1a = 8.8 + a + -1a

Combine like terms: a + -1a = 0
3 + -1a = 8.8 + 0
3 + -1a = 8.8

Add '-3' to each side of the equation.
3 + -3 + -1a = 8.8 + -3

Combine like terms: 3 + -3 = 0
0 + -1a = 8.8 + -3
-1a = 8.8 + -3

Combine like terms: 8.8 + -3 = 5.8
-1a = 5.8

Divide each side by '-1'.
a = -5.8

Simplifying
a = -5.8

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