exam Maths Puzzle Numerical Ability

state the number to replace ? a + 3a= 1a = 3a = (1 + ?) a

Distributive property

Thank you

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exam Other Question

A record store is selling video games originally priced at $45 for &36. What is the rate of discount?

Can you please provide a step by step solution?

Thanks for your help! For what values of k will the system of equations be inconsistent?

x=6y+6
kx-3y=6

work shown needed please.