exam Maths Puzzle Numerical Ability

What is the equation for: twelve less than the quotient of a number and 8 is -1

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exam Other Question

right now were doing matrices and i was wondering if i got the answer right the problem is
and this is the answer i got:
[1 2 3] [ 0 -1 2
Hi, can someone help me with this problem?

Solve for x and y: 2x + 3y = 1
5x + 3y = 16

Thanks.