you need to isolate y. first add 5 on both sides of the equation to isolate 2y. that will get you 15 + 5 = 2y, then add 15 and 5 to get 20. then solve for y, which gets you y = 10
Answer:
117 students
Step-by-step explanation:
13/100 = X/900
(13 * 900)/100 = 117
1/3 2/6
or,x2-x=6
or,x2-x-6=0
or,x2-3x+2x-6=0
or,x(x-3)+2(x-3)=0
or,(x-3)(x+2)=0
so either x=3
or x=-2
look the photo
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