Solve for a.

Question

−7a+28= 7

Answer 1

Step 1: Subtract 28 from both sides of the equation:
-7a + 28 - 28 = 7 - 28
-7a = -21

Step 2: Divide both sides by -7 to solve for 'a':
a = -21 / -7
a = 3

Therefore, the solution for 'a' is 3.