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BartSMP [9]
4 years ago
11

The solution for 7(5x+9)=12-(x+9) and simplified​

Mathematics
1 answer:
Charra [1.4K]4 years ago
4 0

Answer:

x= -5/3

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

7(5x+9)=12−(x+9)

7(5x+9)=12+−1(x+9)(Distribute the Negative Sign)

7(5x+9)=12+−1x+(−1)(9)

7(5x+9)=12+−x+−9

(7)(5x)+(7)(9)=12+−x+−9(Distribute)

35x+63=12+−x+−9

35x+63=(−x)+(12+−9)(Combine Like Terms)

35x+63=−x+3

35x+63=−x+3

Step 2: Add x to both sides.

35x+63+x=−x+3+x

36x+63=3

Step 3: Subtract 63 from both sides.

36x+63−63=3−63

36x=−60

Step 4: Divide both sides by 36.

36x/36 and -60/36

x= -5/3

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ludmilkaskok [199]

Hey There!

Cross multiply on both sides, with this you will be cross multiplying in order to set the numbers up.

s * 2.4 = 2.4s

2.8 * 6 = 16.8

2.4s = 16.8

Divide s from both sides:

16.8/2.4

<u>The answer is 7 or s= 7</u>

5 0
4 years ago
Larry read a 400400400-page book. He read at a rate of 101010 pages per day for ddd days. Write an equation that could be used t
ira [324]

Answer:

From Larry's rate, the equation can be given as D = T/101010

Step-by-step explanation:

Larry's book has 400400400 pages

His reading rate is 101010 pages per day

Let D = Number of days to read the book

To get the number of days it takes fro Larry to read this book, we say

Total pages = Reading rate (pages/day) x Number of days

Let Total pages = T

and Reading rate = R

Hence;

D = T / R

From Larry's rate, the equation can be given as D = T/101010.

From the question,

ddd = 400400400 (pages) / 101010 (pages/day) = 3963.9 days

Hence, it takes Larry approximately 3964 days to read the book.

7 0
4 years ago
Is -9 &lt;, &gt;, or = to 0?
Lostsunrise [7]
-9<0
Because 9 is negative, it's value is less than 0
7 0
4 years ago
Forty students are In Science club. Of those 45% are girls. This percent increase 56% after new girls join the club. How many ne
stepan [7]
45% of 40 is 0.45×40=18 girls
if x girls join then 56% of 40+x is 0.56(40+x)=18+x
22.4+0.56x=18+x
put together like terms
4.4=0.44x
<span>x=10 girls joined</span>
8 0
4 years ago
Identify the percent of change as an increase or a decrease.
icang [17]

Answer:

30% decrease

Step-by-step explanation:

50 - 35 / 50

= 15/50

= 3/10

= 30% (decrease as value is lower than original)

3 0
3 years ago
Read 2 more answers
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