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Mathematics 18 Online
OpenStudy (rainbow_dashie):

http://prntscr.com/5q0j7e

OpenStudy (hysusonic):

what's 72/2

OpenStudy (rainbow_dashie):

@KamiBug

OpenStudy (anonymous):

@hysusonic , why 72/2 ??

OpenStudy (anonymous):

@Rainbow_dashie you know distributive property? a*(b+c) = a*b + a*c

OpenStudy (hysusonic):

ok now what is 36-9

OpenStudy (anonymous):

similar way a*(b - c ) = a*b - a*c

OpenStudy (hysusonic):

oh wait i forgot about order of operations

OpenStudy (anonymous):

generally it's helpful at times, see this example 19*7 = how much? 7*(19) = 7(10+9) = 7*10 + 7*9 = 70 + 63 = 133 or 7*(19) = 7(20 - 1) = 7*20 - 7*1 = 140 - 7 = 133 { you can use formular for 7*20 }

OpenStudy (rainbow_dashie):

...... idk how just help plz

OpenStudy (rainbow_dashie):

@kevindragonlord

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