[tex]\Large\boxed{\boxed{\boxed{{Ola\´\ }}}}}[/tex]
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[tex] \sf12x - 4 = 10x + 4 \\ \sf 12x - 10x - 4 = 4 \\ \sf 12x - 10x = 4 + 4 \\ \sf 2x = 4 + 4 \\ \sf 2x =8 \\ \sf x = \frac{8}{2} \\ \large\boxed{{\sf \large\boxed{{\sf 4{}}}{}}} \\ [/tex]
