<u>answer:</u> 
<u>work:</u>
| subtract 13.50 and move it over
| divide by 7/2
| final answer
Answer:
Lisa is 5 years old
Step-by-step explanation:
we can make an equation like
4x=15+x
X can represent Lisa’s current age
Now just solve for X
3x=15
x=5
And we can check
If Lisa is 5 years old now
In 15 years she would be 20
And 20 is 4 times as 5 which Is her current age
So Lisa is 5 years old now.
X= 20
1.8x +12=48
48-12 = 36
36/1.8 = 20