exam Maths Puzzle Numerical Ability

0.51m+0.03=0.4m-0.74

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exam Other Question

Which does not represent a possible intersection of a line and a triangle? If the two given equations are being solved so that one unknown is eliminated by the method of comparison, which of the following steps is essential
6x+2y=7
6x-5y=8
A. 6x+4y=14