exam Maths Puzzle Numerical Ability

Perform the indicated operation:
a. (8x3 - 3x2 + 7x - 5) + (-2x3 - 3x - 10)

b. (8x3 - 3x2 + 7x - 5) - (-2x3 - 3x - 10)

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exam Other Question

Write each fraction in simplest form.
42/55
Help me please
Simplify: -(-10)