exam
Maths Puzzle
Numerical Ability
Please solve the system of linear equations and check any solution algebraically.
2x+4y-z=7
2x-4y+2z=-6
x+4y+z=0
*this is what i have so far:
2x+4y-z=7
-E1+E2
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exam Other Question
Pease help me get this answer for this mathe problem? I is on substition Algebra 1 x-y=10
5x-y=-6
Can someone offer some assistance to a 49 year old algebra student?
([2a^2b]/[3x^2y])^3 times ([-6xy^2]/[a^3b])^2