September 2021 0 4 Report
Упростите выражения:а)42+(х-15)-(х+17) б) -(а-х)-(х-а)+а в) -(у -4,2)+(-у+1,8)+у г). -(к+5,7)-(2,3*к)-к д) 2,8(4/7м-0,5п)-4/9(3,6м -2+1/4)
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