Question 247501
21x-28 • 7x+14
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10x+20.  4-3x 
7(3x-4)/10(x+2)*7(x+2)/(4-3x)
49(3x-4)(x+2)/10(x+2)(4-3x) cancel (x+2) terms.
49(3x-4)/10(4-3x) ans.