Answer:
Step-by-step explanation:
treadmills=x
stattionary bikes=x+7
equation
25=x+x+7
25=2x+7
solve for x
2x=18
x=9
treadmills=9
stationary bikes=9+7
=16
Answer:
27
Step-by-step explanation:
First you need to find x.
It is shown that DE=EF, so we can use this.
5x-3=3x+7
5x=3x+10
2x=10
x=5
Then, you plug in the value of the variable and solve.
6(5)-3
30-3
27 = DF