Answer:
21; steps are included:
Step-by-step explanation:
lets put this unknown number as a variable (n)
now lets write the equation out: (n=the unknown number)
16 = n-5
To keep the equation balanced we add 5 to both sides:
16+5=n-5+5
21=n
Now that means the unknown value is 21
Hope this helped
A- number of adult tickets
s- number of student tickets
a +s=200 }* - 4,5 ⇒
a*6,5+s*4,5=980
a*6,5 + s*4,5=980
a*( -4,5) - s*4,5= - 200*4,5= -900
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6,5a-4,5a=980-900=80
2a=80
a=80:2
a=40
s=200-40
s=160
i'm pretty sure it's true :
Answer:
it clicked by it self sorry can't help
Step-by-step explanation:
