andrew rides his bike at a speed of 28 km per hour. he rides for one amd one quarter hours at this speed without stopping. How f
2 answers:
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9(2w−y)=21w−9y
First you multiply the numbers in the parenthesis by 9
subtract. 21w-18w=3w
add. -9y+9y=0
divide.
Final answer is 0.