Hi there!
Answer:
a=10 and 10=a
Explanation:
Addition property of equality is adding the same number to both sides of an equation does not change the equation.
switch sides.
-15+a=10-15
subtract by the numbers. subtract it's should be the found in the difference between the numbers, fractions, and spent.
10-15=-5
-15+a=-5
add 15 both sides of an equation.
-15+a+15=-5+15
simplify.
-5+15=10
15-5=10
10+5=15
15-5=10
a=10 and 10=a
Hope this helps!
-Charlie
Have a great day!