75=3(-10a-3)+6a

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Solution for 75=3(-10a-3)+6a equation:


Simplifying
75 = 3(-10a + -3) + 6a

Reorder the terms:
75 = 3(-3 + -10a) + 6a
75 = (-3 * 3 + -10a * 3) + 6a
75 = (-9 + -30a) + 6a

Combine like terms: -30a + 6a = -24a
75 = -9 + -24a

Solving
75 = -9 + -24a

Solving for variable 'a'.

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

Add '24a' to each side of the equation.
75 + 24a = -9 + -24a + 24a

Combine like terms: -24a + 24a = 0
75 + 24a = -9 + 0
75 + 24a = -9

Add '-75' to each side of the equation.
75 + -75 + 24a = -9 + -75

Combine like terms: 75 + -75 = 0
0 + 24a = -9 + -75
24a = -9 + -75

Combine like terms: -9 + -75 = -84
24a = -84

Divide each side by '24'.
a = -3.5

Simplifying
a = -3.5

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