Use an addition property to solve for a. 10 + (–15) = –15 + a

Hi there!

a=10 and 10=a

Step-by-step 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!

answer: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

step-by-step explanation: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.