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tamaranim1 [39]
3 years ago
7

Solve using the given method linear combination 3x + 2y = -4 4x - y = 13

Mathematics
1 answer:
xeze [42]3 years ago
4 0

3x + 2y = -4      (I)

4x - y = 13        (II)

Multiplying both sides of (ii) by 2:

8x - 2y = 26     (iii)

Adding (i) to (iii):

3x + 2y + 8x - 2y = -4 + 26

11x = 22

x = 11

To find out the value of y:

4x - y = 13

y = 4x -13

y = 4.(11) - 13

y = 44 - 13

y = 31

Response: x=11 and y=31 .

:-)

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Answer: Darla would have to pay $17.69 before tax

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7 0
3 years ago
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sineoko [7]
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Jobisdone [24]
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