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makvit [3.9K]
4 years ago
7

Please help!!!!!!!!!!!!!

Mathematics
2 answers:
nevsk [136]4 years ago
8 0
Given => 3x + y = 10. .. equation 1

y = x - 2. ... equation 2

Putting value of y from equation 2 to equation 1, we get

=> 3x + (x - 2) = 10

=> 4x - 2 = 10

=> x = 3

Put the value of x in equation 2

=> y = 3 - 2

=> y = 1

Ans : (3, 1). (Option D)

Hope this helps!
Strike441 [17]4 years ago
6 0

3x + y = 10 \\ 3x + (x - 2) = 10 \\ 3x + x - 2 = 10 \\ 4x - 2 = 10 \\ 4x = 12 \\ x = 3 \\  \\ 3(3) + y = 10 \\ 9 + y = 10 \\ y = 1
(3,1)
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