9a-4+3(a-11)=13

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Solution for 9a-4+3(a-11)=13 equation:


Simplifying
9a + -4 + 3(a + -11) = 13

Reorder the terms:
9a + -4 + 3(-11 + a) = 13
9a + -4 + (-11 * 3 + a * 3) = 13
9a + -4 + (-33 + 3a) = 13

Reorder the terms:
-4 + -33 + 9a + 3a = 13

Combine like terms: -4 + -33 = -37
-37 + 9a + 3a = 13

Combine like terms: 9a + 3a = 12a
-37 + 12a = 13

Solving
-37 + 12a = 13

Solving for variable 'a'.

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

Add '37' to each side of the equation.
-37 + 37 + 12a = 13 + 37

Combine like terms: -37 + 37 = 0
0 + 12a = 13 + 37
12a = 13 + 37

Combine like terms: 13 + 37 = 50
12a = 50

Divide each side by '12'.
a = 4.166666667

Simplifying
a = 4.166666667

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