Answer:
x must equal 5 and y must equal 2
therefore,
5a + 2b = 23 and
5a - 2b = 7.
I'm gonna take 5a + 2b = 23 and add 7 to each side:
5a + 2b + 7 = 30
and substitute 5a -2b in for 7 on the left side:
5a + 2b + (5a-2b) = 30
10a = 30
a = 3
Now we know a. Now take
5a -2b = 7
and substitute in 3 for a
5*(3) - 2b = 7
15 -2b = 7
8 = 2b
b = 4
a = 3 and b = 4
Step-by-step explanation:
Answer:
hope this helppssssssss
Step-by-step explanation:
lucy
Answer:
Step-by-step explanation:
We have been given an equation . We are asked to solve our given equation.
First of all, we will add on both sides of equation to separate x variable on one side of equation.
Now, we will make a common denominator.
Add numerators:
Upon multiply both sides of our equation by , we will get:
Therefore, the solution for our given equation is .
Answer:3x^2 each coefficient is divisible by 3 and and you can take x^2 from both of them
Answer:
5. Mark had 6 laps and John has 42 laps. So you could do a sentence like: John has 42 laps and Mark has 6 laps. What is the diffrence between the two laps?
6. Im not sure about this one :/. Im truly sorry. :(. Good luck tho!
Step-by-step explanation: