Question

Молю решитеее!!!! ДАМ 20 Б.! ​

Answer 1

Ответ:

Пошаговое объяснение:

a)

13x - 169 + 196x - 28 = 33x - 121 + 28 + 10x - 21

209x - 197 = 43x - 114

209x - 43x = 197 - 114

166x = 83

x = 83 : 166

x = 0,5

б)

-225 - 15y - 144y - 12 + 10 = 48y - 256 - 17y - 289

-159y - 227 = 31y - 545

31y + 159y = 545 - 227

190y = 318

y = 318 : 190

y = 1целая 64/95

в)

324 - 18x - 40x - 400 - 8 = 361 - 57x - 25x - 625

-58x - 84 = -82x - 264

82x - 58x = -264 + 84

24x = -180

x = -180 : 24

x = -7,5

г)

-42x + 441 + 576 - 72x - 29 = 30x + 900 + 66x + 484

-114x + 988 = 96x + 1384

-114x - 96x = 1384 - 988

-210x = 396

x = 396 : (-210)

x = -1целая 31/35