3(5a-4)-1=77

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Solution for 3(5a-4)-1=77 equation:


Simplifying
3(5a + -4) + -1 = 77

Reorder the terms:
3(-4 + 5a) + -1 = 77
(-4 * 3 + 5a * 3) + -1 = 77
(-12 + 15a) + -1 = 77

Reorder the terms:
-12 + -1 + 15a = 77

Combine like terms: -12 + -1 = -13
-13 + 15a = 77

Solving
-13 + 15a = 77

Solving for variable 'a'.

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

Add '13' to each side of the equation.
-13 + 13 + 15a = 77 + 13

Combine like terms: -13 + 13 = 0
0 + 15a = 77 + 13
15a = 77 + 13

Combine like terms: 77 + 13 = 90
15a = 90

Divide each side by '15'.
a = 6

Simplifying
a = 6

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