exam Maths Puzzle Numerical Ability

how do i solve 2x-6y= -12

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exam Other Question

What is x in this equation? (2x+5)*(x)=50? solve for x? Sam borrowed $2500 for 5 months from his bank, using U.S. Government bonds as security. The bank discounted the loan at 8%.
How much interest did he pay the bank for the use of i