Ответ:
2) х = 13,1 - 9,26
х = 3,84
-----------------------------------
4) 31/5 + 2/35х = 11
217 + 2х = 385
2х = 385 - 217
2х = 168
х = 84
6) 485/12 + х = 919/15
х = 919/15 - 485/12
х = 417/20
8) -х = 37,7 - 40,02
-х = - 2,32
х = 2,32
10) 491/6 - х = 319/4
-х = 319/4 - 491/6
-х = -25/12
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Ответ:
2) х = 13,1 - 9,26
х = 3,84
-----------------------------------
4) 31/5 + 2/35х = 11
217 + 2х = 385
2х = 385 - 217
2х = 168
х = 84
-----------------------------------
6) 485/12 + х = 919/15
х = 919/15 - 485/12
х = 417/20
-----------------------------------
8) -х = 37,7 - 40,02
-х = - 2,32
х = 2,32
-----------------------------------
10) 491/6 - х = 319/4
-х = 319/4 - 491/6
-х = -25/12