2(х+11,3)=54,2. 3(х-2,9)=6,9 (68,37-у): 6,15=8,2 (х+5,7): - вопрос №211354232969683761582575127850771 от aalina760 07.01.2020 18:12

Question

Математика: 2(х+11,3)=54,2. 3(х-2,9)=6,9 (68,37-у): 6,15=8,2 (х+5,7): 5,1=2

aalina760 · Answer

1) 2х+22,6=54,2х=54-22,62х=31,4х=15,72) 3х-8,7=6,93х=6,9+8.73х=15.6х=5.23)68.37-у=6.15×8.268.37-у=50,43у= 68.37-50.43у=17,944) х+5.7=2×5,1х+5.7=10.2х=10.2-5.7х=4.5...