Question

Me Ajudem Pvf,Preciso Dos Cálculos

Answer 1

Explicação passo a passo:

$a)\\ x+10=3x-16\\ \\ x-3x=-16-10\\ \\ -2x=-26~~~\times(-1)\\ \\ 2x = 26\\ \\ x={26\over2}\\ \\ x=13$

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$b)\\ 3x+5=20\\ \\ 3x=20-5\\ \\ 3x=15\\ \\ x={15\over3}\\ \\ x=5$

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$c)\\ 5(x-4)=3(x-8)\\ \\ 5x-20=3x-24\\ \\ 5x-3x=-24+20\\ \\ 2x=-4\\ \\ x=-{4\over2}\\ \\ x=-2$

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$d)\\ x+6=2(x-2)\\ \\ x+6=2x-4\\ \\ x-2x=-4-6\\ \\ -x=-10~~~\times(-1)\\ \\ x=10$

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$e)\\ {x\over3}+1=x-{1\over4}\\ \\ mmc(3,4)=12\\ \\ 4x+12=12x-3\\ \\ 4x-12x=-3-12\\ \\ -8x=-15\\ \\ x={-15\over-8}\\ \\ x={15\over8}$

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$f)\\ {3(x+3)\over5}={3+2x\over2}\\ \\ mmc(5,2)=10\\ \\ 6(x+3)=5(3+2x)\\ \\ 6x+18=15+10x\\ \\ 6x-10x=15-18\\ \\ -4x=-3~~~\times(-1)\\ \\ x={3\over4}$