А)1 1/2*3 1/3-4 4/9: 4 б)3 2/7 *1 1/3+3 2/7*1 2/3 - вопрос №74919431123134494327113327123 от adventuretime93 23.12.2022 01:17

Question

Математика: А)1 1/2*3 1/3-4 4/9: 4 б)3 2/7 *1 1/3+3 2/7*1 2/3

adventuretime93 · Answer

а)1 1/2*3 1/3-4 4/9:4 = 3/2 * 10/3 - 40/9 : 4 = 30/6 - 40/9*1/4 = 5 - 10/9 = 9* 5/1- 10/9=(45-10)/9=35/9=3 8/9б)3 2/7 *1 1/3+3 2/7*1 2/3=23/7*4/3+23/7*5/3=92/21+115/21=207/21=9 18/21=9 6/7...