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MrRissso [65]
2 years ago
11

Hi! can someone answer this math problem? its x-7y=-11 ; 5x+2y=-18,,, if so can anyone do it step by step? please and thank you!

!
ps: when u answer it pls use either the substitution method or elimination method, either way works:),
Mathematics
1 answer:
Stella [2.4K]2 years ago
8 0

Answer:

X = -4  and Y = 1 (sorry if wrong im only in 6th grade ;(

Step-by-step explanation:

X - 7Y = -11 ......(i)

5X + 2Y = -18 ........(ii)

multiply equation (i) by 5 we get 5X - 35Y = -55 ....(iii)

subtract equation (ii) from (iii)

we get -37Y = -37 ⇒ Y = 1

now put the value of Y from above in equation (i)

we get X = -4

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What is the equivalent expression of 8x+7y+5x+4y+2y
Natalija [7]

Answer:

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Step-by-step explanation:

(combine like terms)

8x+5x=13x

7y+4y+2y=13y

hope this helped you!

4 0
3 years ago
How do I solve this problem?
Andrews [41]

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6 0
3 years ago
You need to solve a system of equations. You decide to use the elimination method. Which of these is not allowed? 2x - 3y = 12
suter [353]

Answer:

A.

Step-by-step explanation:

The Elimination Method is the method for solving a pair of linear equations which reduces one equation to one that has only a single variable.

If the coefficients of one variable are opposites, you add the equations to eliminate a variable, and then solve.

If the coefficients are not opposites, then we multiply one or both equations by a number to create opposite coefficients, and then add the equations to eliminate a variable and solve.

When multiplying the equation by a coefficient, we multiply both sides of the equation (multiplying both sides of the equation by some nonzero number does not change the solution).

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6 0
2 years ago
If he has his choices narrowed down to 77 hip-hop, 55 jazz, 77 pop, and 88 blues songs, and he wants to play all 55 jazz songs,
Gnom [1K]

Answer:

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Step-by-step explanation:

55!

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4 0
3 years ago
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katen-ka-za [31]

B. 3x-1 is the answer.


Hope this helps and good luck. :)

4 0
2 years ago
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