1.15a+8-0.4=7

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Solution for 1.15a+8-0.4=7 equation:


Simplifying
1.15a + 8 + -0.4 = 7

Reorder the terms:
8 + -0.4 + 1.15a = 7

Combine like terms: 8 + -0.4 = 7.6
7.6 + 1.15a = 7

Solving
7.6 + 1.15a = 7

Solving for variable 'a'.

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

Add '-7.6' to each side of the equation.
7.6 + -7.6 + 1.15a = 7 + -7.6

Combine like terms: 7.6 + -7.6 = 0.0
0.0 + 1.15a = 7 + -7.6
1.15a = 7 + -7.6

Combine like terms: 7 + -7.6 = -0.6
1.15a = -0.6

Divide each side by '1.15'.
a = -0.5217391304

Simplifying
a = -0.5217391304

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