\(\Leftrightarrow41-2x+5=720:20=36\)
=>-2x=0
hay x=0
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\(\Leftrightarrow41-2x+5=720:20=36\)
=>-2x=0
hay x=0
720÷[41-(2x+5)]=2²×5
720÷[41-(2x+5)]=2³×5
d) 720:[41-(2x-5)]=2³.5
720:((5-2x)-(-41))=2^3*5
720:41-(2x-5)=23*5
720:[41-(2x-5)]=23.5
720:[41-(2x-5)]=23.5
tìm x biết 720 : [ 41- (2x -5) ] = 2^3 .5
( 720:[41-(2x-5)]=23.5