Answer:
13. 3/4 = 75/100 = 75%
14. 1/2 = 50/100 = 50%
15. 17/20 = 85/100 = 85%
16. 13/25 = 42/100 = 42%
Step-by-step explanation:
For this question, you do the opposite of what you did in the other problem. You put the percentage over a denominator of 100. For example,
75 ⇒ 75/100
50 ⇒ 50/100
85 ⇒ 85/100
Then, to find the reduced fraction, you cross-multiply to find the numerator of the fraction.
75 × 4 = 300 / 100 = 3 ⇒ 3/4
50 × 2 = 100 / 100 = 1 ⇒ 1/2
85 × 20 = 1700 / 100 = 17 ⇒ 17/20
To solve #16, please reference back to my explanation from the other question.
Expand
6 - 3x + 15 = 5x - 11
Simplify 6 - 3x + 15 to -3x + 21
-3x + 21 = 5x - 11
Add 3x to both sides
21 = 5x - 11 + 3x
Simplify 5x - 11 + 3x to 8x - 11
21 = 8x - 11
Add 11 to both sides
21 + 11 = 8x
Simplify 21 + 11 to 32
32 = 8x
Divide both sides by 8
32/8 = x
Simplify 32/8 to 4
4 = x
Switch sides
<u>x = 4</u>
What to do with these equations ?
Answer:
a=4
Step-by-step explanation:
8=3a-4
12=3a
a=4
its B Step-by-step explanation:
