Answer:
-4x is equivalent to 19x-23x.
Step-by-step explanation:
19x and 23x are like terms because they both end in a "x."
We can add or subtract like terms, so 19x-23x just becomes (19-23)x.
(19-23)x = (-4)x = -4x
Let me know if this helps!
220 miles
65 miles per hour for 2 hours — 65+ 65 = 130
60 miles per hour for 1.5 hours — 60 (for the 1 hour) + 30 (for the half hour) = 90
130 + 90 = 220
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