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Question

If x+3y=6 and 2x3y=12 intersect, what is the value of x?
  1. 6

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Solution

The correct option is A 6
Given: x+3y=6 and 2x3y=12

Now,
Equation 1: x+3y=6
x y
0 2
6 0

Equation 2: 2x3y=12
x y
0 -4
6 0

Plotting the points and draw the lines on the graph:

From the graph, lines intersect at (6, 0). So, the value of x is 6.

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