Answer:
b=2
Step-by-step explanation:
9x + 12y = 21
6x + 8y = 7b
To have an infinite number of solutions, the two equations must be equal
Take the first equation and divide by 3, since it is a factor of all the terms
9x/3 + 12y/3 = 21/3
3x+4y = 7
Then multiply by 2 to get the x term equal
2*3x + 2*4y = 2*7
6x +8y = 7*2
Comparing this to the second equation
6x + 8y = 7b
b must equal 2
So basically the decimal dot is in the tenth place which means it is 5/10
U can simplify that into 1/2
Final answer: 1/2
Answer: 7/c
Step-by-step explanation: The reason I did a slash is because there is no division symbol on the keyboard.
Hope this helps
Step One
Change to improper fractions.
1 3/11 = 14/11
1 3/4 = 7/4
Step Two
Find the common denominator
11 = 11 * 1
4 = 2 * 2
The common denominator = 11 * 2 * 2 = 44
Step 3
change the improper fractions to the common denominator.
-21/44 That has to be your final answer.
Y = 9 + 2x/5 You do this by getting x and y on separate sides