Answer:
4
Step-by-step explanation:
Lets make
be the ? in the equation.
That becomes (
x 3) - 3 = 15.
First you have to add 3 on both sides. After doing that it gets to (
x 3) = 15 - 3.
Then you simplify it to 3
= 12.
Now you divide 3 on both sides. That gets to
= 4 after doing it.
Hope this helped! If not, please let me know! <3
Answer:
the answer is (-1,2), hope this helps.
We have an equation: 250/?= 50/100
Cross multiply:
50*?= 250*100
⇒ ?= 250*100/50= 500
The number is 500~
We have another equation: ?/500= 80/100
Cross multiply:
100*?= 80*500
⇒?= 80*500/100= 400
80% of 500 is 400~