Question

Solve 0.5a+0.5=0.9a-25

Answer 1

Answer: a = -250

Explanation:

1. Solve the left side: 0.5a + 0.5a = a

2. Subtract 0.9a to the other side which gives: a - 0.9a = -25

3. Solve the left side again: 0.1a = -25

4. Divide 0.1a to the right side to isolate a: a = -25/0.1

5. Now divide -25 / 0.1 to get a = -250

Answer 2

a=63.75

Explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.