3(4a-7)=5

Solution for 3(4a-7)=5 equation:

Simplifying
3(4a + -7) = 5

Reorder the terms:
3(-7 + 4a) = 5
(-7 * 3 + 4a * 3) = 5
(-21 + 12a) = 5

Solving
-21 + 12a = 5

Solving for variable 'a'.

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

Add '21' to each side of the equation.
-21 + 21 + 12a = 5 + 21

Combine like terms: -21 + 21 = 0
0 + 12a = 5 + 21
12a = 5 + 21

Combine like terms: 5 + 21 = 26
12a = 26

Divide each side by '12'.
a = 2.166666667

Simplifying
a = 2.166666667