exam Maths Puzzle Numerical Ability

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x-5y=10
2x-10y=20

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exam Other Question

please help me i am just not getting it .

i have to fill out the blank with approriate inequality symbol i have to show work and support my conclusion.
3/4______13/16

simplify -5[1-7](-6)+1

Evaluate 4x-y when x= 3 and y=_7. You role a six sided die 30 times. What is the theoretical probability of rolling a 1?