Answer:
adult = 52
student = 37
Step-by-step explanation:
make adult as x and student as y.
it will then be x + y = 89
5x + 3y = 371
solve it and the answer comes out
Answer :
Sum = 2x-7 + (-2x) and equivalent expression = -7
Step-by-step explanation:
First number is (2x-7) and other number is opposite of 2x i.e. (-2x).
We need to write the sum of 2x - 7 and the opposite of 2x
Opposite of 2x is (-2x)
Sum means to add the number :
2x-7 + (-2x)
Removing parentheses,
2x-7 - 2x
Taking like terms together,
2x-2x-7= 0-7
= -7
Hence, the answer is -7.
Answer:
Step-by-step explanation:
the cyclist traveled 140 miles, each day, for 8 hours
in a day he traveled 140/8=17.5 miles per hour
Is this what you are looking for?
So what I did was that I put the 5 and the two as a whole number, and I just put the minus sign in the middle. Then, I did the "change to the opposite" thing. What u do is u put the five normal then you put a plus sign then a - 2 (negative two), and at the end u just do 5 minus 2.
It's kind of confusing but You'll get it some day :)
The solution is when x= 1
Hope this helps!