How do you evaluate #\frac{50\times 80-5000}{80-130}#?

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Answer 1 · 2017-03-29T08:07:41

#color(red)20#

#(50 xx 80-5000)/(80-130)#

#:.=(4000-5000)/(80-130)#

#:.=(-1000)/-50#

#:.=cancel(-1000)^color(red)(-20)/1 xx 1/cancel(-50)^color(red)(-1)#

#:.=-20/1 xx 1/-1#

#:.color(red)(=- xx - =+#

#::color(red)(.=20#