book Maths Puzzle Numerical Ability

Simplify: 2x + 7(x+7) a) -5x + 49 b) 9x + 7 c) 9x + 49 d) 9x-49

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solve using the calculator.

3x+2y=3
y=(3/2)x-(1/2)

(3/2)and(1/2) are shown as fractions out of paranthesis on my paper. Using only 8 9s how do I get to a total of 1125?