solve this one step by step : 7a-b=15a, for a
Betty or Evelyn -- please use the same name for your posts.
I showed you how to do your other problems. Now it's your turn.
I'll be glad to check your answer.
7a-b=15a/
15a-15a=b-15a/
7/7a=15-b/7
7=a
To solve the equation 7a - b = 15a for a, follow these steps:
Step 1: Combine like terms. Add b to both sides of the equation:
7a - b + b = 15a + b
7a = 15a + b
Step 2: Simplify the equation. Subtract 15a from both sides of the equation:
7a - 15a = 15a + b - 15a
-8a = b
Step 3: Divide both sides of the equation by -8 to isolate a:
-8a / -8 = b / -8
a = -b/8
So, the solution to the equation is a = -b/8.