What is the value of (3x+2y)−(3x−2y) when x=−2 and y=−1?
A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.
Solution
The expression (3x+2y)−(3x−2y) is equal to 3x+2y−3x+2y which equals 4y. When x=−2 and y=−1, this equals 4(−1) or −4.
Want a route through all this instead of an archive? The track
puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.
Source: Omni-MATH,
licensed Apache-2.0.
Statement reproduced verbatim; metadata (topic, difficulty) added by this project.