Question

Будьласка вот пример 13,1-(×+5,8)=1,7 и ищо 2 (×-4,7)-2,8=5,9 (y-4,42)+7,18=24,3

Answer 1

13,1-(х+5,8)=1,7

13,1-х-5,8=1,7

-х=1,7-13,1+5,8

х=5,6

(х-4,7)-2,8=5,9

х=5,9+2,8+4,7

х=13,4

(y-4,42)+7,18=24,3

у=24,3-7,18+4,42

у=21,54.

Answer 2

$13.1 - (x + 5.8 )= 1.7 \\ 13.1 - - 5.8 = 1.7 \\ 7.3 - x = 1.7 \\ - x = 1.7 - 7.3 \\ - x = - 5.6 \\ x = 5.6 \\ \\ (x - 4.7) - 2.8 = 5.9 \\ x - 4.7 - 2.8 = 5.9 \\ x - 7.5 = 5.9 \\ x = 5.9 + 7.5 \\ x = 13.4 \\ \\ (y -4 .42) + 7.18 = 24.3 \\ y - 4.42 + 7.18 = 24.3 \\ y + 2.76 = 24.3 \\ y = 24.3 - 2.76 \\ y = 21.54$