exam Maths Puzzle Numerical Ability

simplify (3x-1y-2)

the -1 and -2 are exponents i just dont know how to type them in please help

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1. (4 pts) ÐDEF and ÐGHI are complementary angles and ÐGHI is eight times as large as ÐDEF. Determine the measure of each angle.
pls can you help me check my answer....

log(little8)2 i came up with my answer 1/3

am i right