True Equations
c-8=25
Which value makes the equation true?
c = 17 , 28 , 33 , 35
33-8=25
c=33
Use inverse operations to solve for m
m-14=-3
m=11
Use Inverse Operations to solve for n:
5n=-35
n=-7
Write an equation, then solve for the variable.
The sum of 20 and a number, n, is negative 22.
20+n=-22
n=-42
Are the equations balanced? Explain.
28-8=20
28-8+q=20-q
No, different operations were used on either side of the equation.
Solve for the variable:
21=x-5.2
x=26.2
Use Inverse Operations to solve for q:
q/-9=-3
q=27
McKenna earns $30 each week walking dogs.
After walking dogs for w weeks, she earned $150.
Write and Solve an equation for w.
30w=150
w=5
Choose which equations are true when x = 9
-7x=-63
x-1.58=1.92
(-27)/x=3
x/4=2.25
-7(9)=-63
(9)/4=2.25
Use inverse operations to solve for t:
t+1/4=2 7/12
t=2 1/3
Solve for the variable:
3/4k=6
k=8
Jodee buys 5 peaches for $3.55
Write and solve an equation to find c, the cost of each peach.
5c=3.55
c=$0.71