9 + 4x= 143
4x= 143-9
4x = 134
х = 134 : 4
x = 33.5
x : 12=36
x = 36 * 12
x = 432
5x + 4x - 17 = 64
9x = 64 + 17
9x = 81
x= 9
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9 + 4x= 143
4x= 143-9
4x = 134
х = 134 : 4
x = 33.5
x : 12=36
x = 36 * 12
x = 432
5x + 4x - 17 = 64
9x = 64 + 17
9x = 81
x= 9
4х=43-9
4х=34
х=34:4
х=8,5