[tex]14 - 8(x - 2) = 51 - 15x \\ 14 - 8x + 16 = 51 - 15x \\ 30 - 8x = 51 - 15x \\ 15x - 8x = 51 - 30 \\ 7x = 21 \\ x = 21 \div 7 \\ x = 3[/tex]
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-8х+15х=51-14-16
7х=21
х=3
[tex]14 - 8(x - 2) = 51 - 15x \\ 14 - 8x + 16 = 51 - 15x \\ 30 - 8x = 51 - 15x \\ 15x - 8x = 51 - 30 \\ 7x = 21 \\ x = 21 \div 7 \\ x = 3[/tex]