0.4a+0.7(13-a)=7.6

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Solution for 0.4a+0.7(13-a)=7.6 equation:


Simplifying
0.4a + 0.7(13 + -1a) = 7.6
0.4a + (13 * 0.7 + -1a * 0.7) = 7.6
0.4a + (9.1 + -0.7a) = 7.6

Reorder the terms:
9.1 + 0.4a + -0.7a = 7.6

Combine like terms: 0.4a + -0.7a = -0.3a
9.1 + -0.3a = 7.6

Solving
9.1 + -0.3a = 7.6

Solving for variable 'a'.

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

Add '-9.1' to each side of the equation.
9.1 + -9.1 + -0.3a = 7.6 + -9.1

Combine like terms: 9.1 + -9.1 = 0.0
0.0 + -0.3a = 7.6 + -9.1
-0.3a = 7.6 + -9.1

Combine like terms: 7.6 + -9.1 = -1.5
-0.3a = -1.5

Divide each side by '-0.3'.
a = 5

Simplifying
a = 5

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