2x+12=3x-31. we add 31 to both sides 2x+33=3x. we subtract 2x on both sides and get 33=x so x is 33
Let x=Don's present age
2x=Chris's present age
next year:
<span>x+1=Don's age
</span><span><span>2x+1=Chris's age
(x+1)+((2x+1)=4(x-1) (next year the sum of their ages will be four times as much as Don's age last year.)
x+1+2x+1=4x-4
x=6
2x=12
Don's present age=6
Chris's present age=12 </span><span>
</span></span>
1) -4|x+5| = -16
2) inside the lines has to be 4 bc 4×4 is 16 so the possible ways to get 4 is -9 and -1
Answer: 2 feet tall
Step-by-step explanation: 5*6=30/60=2