exam
Maths Puzzle
Numerical Ability
Solve the following system of equations. what is the value of z?
x+y+z=1
2x-y+3z=-7
3x+2y+2z=4
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Can someone please help me to understand these. Its been a long time for me in high school.
c. Simplify: (-4 + x2 + 2x3) – (-6 – x + 3x3) – (-6y3 + y2)
d. Add: (2x2 + 6y2
I'm having a hard time figuring these answers out. Please Help.
1.) 3x-(x+2)=5x-3(x-1)
2.) 5x-(7x-4)-2=5-(3x+2)
thank you so much!