Раскройте скобки и выражение -(7/22+x)+3/11*(x-1/2) - вопрос №33608917223111229518215 от tasikmk09 26.03.2020 06:37

Question

Математика: Раскройте скобки и выражение -(7/22+x)+3/11*(x-1/2) -(2/9-x)+5/18*(2/15+x)

tasikmk09 · Answer

1)
-(7/22+x)+3/11*(x-1/2) = -7/22-х+3/11х-3/11*1/2 = -7/22 - 11/11х + 3/11х - 3/22 = -10/22 - 8/11х = -10/22 - 16/22х = -2/22*(5+8х) = -1/11*(5+8х)
2)
-(2/9-x)+5/18*(2/15+x) = -2/9+х+5/18*2/15+5/18х = -4/18+27/27х+1/27+5/18х = -12/54+54/54х+2/54+15/54х = 69/54х-10/54 = 1/54*(69х-10)