exam Maths Puzzle Numerical Ability

Solve the given system of equations:

2x+2y =6
x + y + z =1
3x+ 4y- z =13

This is a 3x3 matrix.

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exam Other Question

Lisa is conducting an expeeriment of tossing two ordinary dice and adding the two numbes. Determine the probability of her obtaining:
a) A sum of 5
b) A sum greater than or equal to 8
c) A sum less than 6 what is the linear combination of
2x-y=-3
-5x+y=9
would you also provide two more answers for me.
2x-3y=-16
x+3y=10
and
10x-5y=5
2x+5y=-5
thats all thanks for the help i realy need it!