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Masja [62]
3 years ago
15

Solve these simultaneous equations: 2x + 4y = 38 7x - 4y =7

Mathematics
2 answers:
lesya [120]3 years ago
6 0

Answer:

x=5, y=7

Step-by-step explanation:

2x+4y= 38

+7x-4y= 7

9x= 45

9x/9= 45/9

x=5

2x+4y=38

2(5)+4y= 38

10+4y= 38

-10 -10

4y= 28

4y/4= 28/4

y=7

vichka [17]3 years ago
4 0

Answer:

Step-by-step explanation:

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