Д) 8 5/11*4 2/9+8 5/11*6 7/9 е)6 3/5*7 1/6-2 - вопрос №82762558511429851167963571621663593825725 от den53499 10.02.2020 01:27

Question

Математика: Д) 8 5/11*4 2/9+8 5/11*6 7/9 е)6 3/5*7 1/6-2 1/6*6 3/5 ж)9 3/8*2 5/7-2 5/7*7 3/8 з)3 3/4*3 3/4+3 3/4*1/4. выручите

den53499 · Answer

Д) 8 5/11*4 2/9+8 5/11*6 7/9 =8 5/11*(4 2/9 + 6 7/9)=8 5/11 * 11 = 93/11 * 11=93

е)6 3/5*7 1/6-2 1/6*6 3/5 =6 3/5*(7 1/6 - 2 1/6) = 6 3/5 * 5 = 33/5 * 5 = 33

ж)9 3/8*2 5/7-2 5/7*7 3/8 =2 5/7*(9 3/8 - 7 3/8) = 2 5/7 * 2 = 19/7 * 2 = 38/7 = 5 3/7

з)3 3/4*3 3/4+3 3/4*1/4= 3 3/4*(3 3/4 + 1/4)=3 3/4 * 4 = 15/4 * 4 = 15.