6у+11у+15=321 15(2х+11)=285 х: 8+7=9 56: х-6=8 - вопрос №326585661115321152112858795668 от matveydayp0cd3p 30.10.2021 19:26

Question

Математика: 6у+11у+15=321 15(2х+11)=285 х: 8+7=9 56: х-6=8 .

matveydayp0cd3p · Answer

Y * ( 6 + 11 ) = 321 - 15
Y = 306 : 17
Y = 18

X : 8 = 9 - 7
X : 8 = 2
X = 2 * 8
X = 16

15 * ( 2X + 11 ) = 285
2X + 11 = 285 : 15
2X + 11 = 19
2X = 8
X = 4

56 : X = 8 + 6
56 : X = 14
X = 56 : 14
X = 4