Question
Find the unknown number in each equation.
5a-3a= 18
a=
5a-3a= 18
a=
Answers
Ms. Sue
5a-3a= 18
2a = 18
Divide both sides of the equation by 2.
a = 9
~~~~~~~~~~~~~~~~~~~~~~~
You can prove this by substituting 9 for a in the original equation.
5(9) - 3(9) = 18
45 - 27 = 18
Yep!! It's right.
2a = 18
Divide both sides of the equation by 2.
a = 9
~~~~~~~~~~~~~~~~~~~~~~~
You can prove this by substituting 9 for a in the original equation.
5(9) - 3(9) = 18
45 - 27 = 18
Yep!! It's right.