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olga nikolaevna [1]
3 years ago
8

Help me with this!!!!!!!!!! please!!!!!!!!!!!!!

Mathematics
2 answers:
Ipatiy [6.2K]3 years ago
7 0

Answer:

(2, 3)

Step-by-step explanation:

3x + 4y = 18

-1 (-2x + 4y) = (8)-1

2x - 4y = -8

<em>Elimination</em>:                                  Side work:

 3x + 4y = 18                                  3x + 2x = 5x

<u>  2x - 4y = -8</u>                                   4y - 4y = nothing

   5x       = 10                                   18 - 8 = 10

    x = 2                                            Divide by 5 on both sides

Substitute back in to one of the equations

x = 2

3x + 4y = 18

3(2) + 4y = 18

6 + 4y = 18

4y = 18 - 6              Subtract 6 on both sides

4y = 12                  Divide by 4 on both sides

y = 3

VMariaS [17]3 years ago
5 0
The answer/solution is (2,3)
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38 - 10 = 28

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7 0
4 years ago
Read 2 more answers
Given: 3x + 1 = -14; Prove: x = -5
MrRissso [65]

Answer:

x = -5

Step-by-step explanation:

Solve for x:

3 x + 1 = -14

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(3 x)/3 = (-15)/3

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3 years ago
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3 years ago
How can i get my answer for 5+(-34)
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Hello there.

Answer: ⇒⇒⇒⇒-29

Step-by-step explanation:

Remove parenthesis.

5-34

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Thank you for posting your question at here on brainly.

-Charlie

4 0
3 years ago
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