If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the second equation is substituted into the first equation.

2x – 3y = –29
x + 4y = 13

2(4y + 13) – 3y = –29

2(–4y + 13) – 3y = –29

2x – 3(4y + 13) = –29

2x – 3(–4y + 13) = –29 ...?

Question

21-11-2016
Mathematics

contestada

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the second equation is substituted into the first equation.

2x – 3y = –29
x + 4y = 13

2(4y + 13) – 3y = –29

2(–4y + 13) – 3y = –29

2x – 3(4y + 13) = –29

2x – 3(–4y + 13) = –29 ...?

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JcAlmighty JcAlmighty · Answer 1 · 2016-11-22T11:33:20+01:00

The answer is 2(–4y + 13) – 3y = –29

Step 1: Express x from the second equation
Step 2: Substitute x into the first equation:

The system of equations is:
2x – 3y = –29
x + 4y = 13

Step 1:
The second equation is: x + 4y = 13
Rearrange it to get x: x = - 4y + 13

Step 2:
The first equation is: 2x – 3y = –29
The second equation is: x = - 4y + 13
Substitute x from the second equation into the first one:
2(-4y + 13) - 3y = -29

Therefore, the second choice is correct.

alexasnelly alexasnelly · Answer 2 · 2020-11-30T21:57:21+01:00

alexasnelly alexasnelly

30-11-2020

Answer:

can confirm that the answer above is correct

hope yall have a nice day

Step-by-step explanation:

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