Explanation:
m< I = m < 2 = m < 3
7y+16 = 2X
7y - 2x +16 = O ............I
7y +16 = 4X _30
7y -4 x + 46 = 0 ...............2
solve eq I,2
2 X - 30= o
X= 15
substitute in I
7X= 14
y = 2
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