exam Maths Puzzle Numerical Ability

1.) Simplify the following with NO NEGATIVE EXPONENTS in your final answer.

(4a^x+3)(2a^1-x)=

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exam Other Question

24/t+8 = 5/3 I need help solving these two seperate problems by using the substitution method. Can anybody help?
1. 1.25x+1.10y=1520

2. 1.10x+1.25y=1535

Please somebody help me!