exam Maths Puzzle Numerical Ability

2x-y+2z=8
x+2y+4z=3
x+3y-2z=-1

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exam Other Question
Find the sum or difference. -1 5/8 - ( -2 1/5 )








Thanks! Happy Holidays! Decide whether the values of the variables listed are solutions of the system of equations.

3x + 3y + 2z = 4
x - y - z = 0
2y - 3z = -8

x= 1, y= -1, z= 2