3 years ago

What is the working out an answer to this simultaneous question 3x+y=17 2x+y=12

Mathematics

2 answers:

Umnica [9.8K]3 years ago

5 0

Answer is x=5 and y=2

Igoryamba3 years ago

3 0

Answer:

3x + y = 17 --------(1)

2x + y = 12 ---------(2)

from (1) : y = 17 - 3x.

Substitute y in (2)

2x + (17 -3x) = 12

2x + 17 -3x = 12

-x = 12 - 17

-x = -5

x = 5

Substitute x in (1)

3(5) + y = 17

15 + y = 17

y = 17 -15

y = 2

Answer : x = 5, y = 2

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