Question

12a+7c=315
how to solve for/what is a?

Answer 1

`12a+7c=315\\\\\implies 12a = 315-7c\\\\\implies a = (315-7c)/(12)\\\\\implies a = (7)/(12)(45-c)`

Answer 2

Answer:
Well I mean There are multiple solutions I think, a = 26.25

Explanation:

Simplifying

12a + 7c = 315

Solving

12a + 7c = 315

Solving for variable 'a'.

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

Add '-7c' to each side of the equation.

12a + 7c + -7c = 315 + -7c

Combine like terms: 7c + -7c = 0

12a + 0 = 315 + -7c

12a = 315 + -7c

Divide each side by '12'.

a = 26.25 + -0.5833333333c

Simplifying

a = 26.25 + -0.5833333333c