Evaluate the expression. Write fractions in the simplest form.
-9·2
Step 1: =-9·2
=-18
Step 2: Product of two numbers with different signs is negative.
Final Answer: The final answer is -18.
Write the expression nCr+1+nCr−1+2×nCr in the simplest form.
Evaluate the expression. Write fractions in simplest form.
-72÷(-3)
Evaluate the expression. Write fraction in simplest form.
2.85÷6.2÷22
-4.2+8.1×(-1.9)
-232-34213