7) 3x+Y=1 and 5x-Y=7 then x = _____Question 4Answera.x=0 y=1b.x = -1 y=2c.x=1 , y = -2d.x= -1 y = 3
Question
- 3x+Y=1 and 5x-Y=7 then x = _____Question 4Answera.x=0 y=1b.x = -1 y=2c.x=1 , y = -2d.x= -1 y = 3
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Solution
The answer is c. x=1 , y = -2.
Step 1: Add the two equations together: (3x + y) + (5x - y) = 1 + 7. This simplifies to 8x = 8, so x = 1.
Step 2: Substitute x = 1 into
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