I cant really read it that well D:
Answer:
Should be 12
Step-by-step explanation:
I am not best at math so I cant explained well
Try this suggested solution:
1. if 'Equation2'-'Equation1', then
(5x+4y)-(5x-y)=42-27; ⇒ 5y=15; ⇒ <u>y=3</u>.
2. if to substitute y=3 into the Equation1, it is possible to find 'x':
5x-3=27; ⇒ 5x=30; ⇒ <u>x=6</u>.
answer: (6;3)
Answer:
460256
Step-by-step explanation:
35900 books equal to 7.8% of all copies sold
<u>Total number of books:</u>
- 7.8% = 35900
- 100% = ?
- 35900*100/7.8 ≈ 460256
<u>Answer is</u> 460256 in whole numbers