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Maths Puzzle
Numerical Ability
(1) 6a^-2 b^3 c^-2/12a^4 b c^-1
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add:
(6y^2+3xy+y+7)+(7y^2-xy+6y)
solve the system graphically: y = 2x - 3
y = 3x - 5
If two linear equations graph as intersecting lines, they are called { } equations.