<em>4x-79=3x-29</em>
<em>Move the terms with "x" on the left, and the numbers on the right.</em>
<em>4x-3x=79-29</em>
<em>x=50</em>
Amy runs 1 mile in 7.6 minutes so in 57 minutes she will have run 7.5 miles
Do you mean the ratio 1:2
minus 4 both sides
square both sides
x+2=4
minus 2
x=2
<span>the answer is
x = 2; not extraneous</span>
