1) -1/3 = 1/9 х +81/9х = -1/3 - 81/9х = -8 целых 1/3х = -25/3 * 9х = -752) 0,3 = 1/9х + 81/9х = 0,3-81/9х = -7,7х = -7,7 * 9х = -69,33) 1/9 х +8 = 81/9х = 8-81/9х = 0х = 04) 1/9 х +8 = 301/9х = 22х = 22*9х = 1985) 1/9 х + 8 = 71/9 х = -1х = -96) 1/9х + 8 = -11/9х = -9х = -81
13 = - 0,4х + 58 = - 0,4хх= -20
Прости, последний не знаю.
Думаю смогла помочь)
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Answers & Comments
1) -1/3 = 1/9 х +8
1/9х = -1/3 - 8
1/9х = -8 целых 1/3
х = -25/3 * 9
х = -75
2) 0,3 = 1/9х + 8
1/9х = 0,3-8
1/9х = -7,7
х = -7,7 * 9
х = -69,3
3) 1/9 х +8 = 8
1/9х = 8-8
1/9х = 0
х = 0
4) 1/9 х +8 = 30
1/9х = 22
х = 22*9
х = 198
5) 1/9 х + 8 = 7
1/9 х = -1
х = -9
6) 1/9х + 8 = -1
1/9х = -9
х = -81
13 = - 0,4х + 5
8 = - 0,4х
х= -20
Прости, последний не знаю.
Думаю смогла помочь)