3.5a+2.5(a+3)+a=1.5

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Solution for 3.5a+2.5(a+3)+a=1.5 equation: 


Simplifying
3.5a + 2.5(a + 3) + a = 1.5

Reorder the terms:
3.5a + 2.5(3 + a) + a = 1.5
3.5a + (3 * 2.5 + a * 2.5) + a = 1.5
3.5a + (7.5 + 2.5a) + a = 1.5

Reorder the terms:
7.5 + 3.5a + 2.5a + a = 1.5

Combine like terms: 3.5a + 2.5a = 6a
7.5 + 6a + a = 1.5

Combine like terms: 6a + a = 7a
7.5 + 7a = 1.5

Solving
7.5 + 7a = 1.5

Solving for variable 'a'.

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

Add '-7.5' to each side of the equation.
7.5 + -7.5 + 7a = 1.5 + -7.5

Combine like terms: 7.5 + -7.5 = 0.0
0.0 + 7a = 1.5 + -7.5
7a = 1.5 + -7.5

Combine like terms: 1.5 + -7.5 = -6
7a = -6

Divide each side by '7'.
a = -0.8571428571

Simplifying
a = -0.8571428571

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