Answer:
X-61=100
X=100-61
X=39%
Step-by-step explanation:
or, 3x-5=2.5x+3-x+4
or, 3x-1.5x=7+5
or, 2.5x=12
or, x=4.8 solved.
plus 4 every time
1+4=5+4=9+4=13+4=17
the answer is 6