exam Maths Puzzle Numerical Ability

6y2 -y- 2) / _2y+1_
3y-2

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exam Other Question

Subtract the following
-6-(-4)

Would this be -10?
Perform the matrix row operation and write the new matrix.

[2 4 7 |3]
[3 4 -1 |5] -2R1 + R3
[4 -6 3 |-2]