Matemática
diego2007santos
5

resolva a equação: 5x-12=3x x+7=4x 2m-5=14-3m 3x+2-x=5-3 2y+12=y-3 ME AJUDEM POR FAVOR

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(2) Respostas
mambre123

Bom dia Kenji! Solução! [latex]A)~~5x-12=3x \\\\\ 5x-3x=12 \\\\\ 2x=12 \\\\\ x= \dfrac{12}{2} \\\\\ x=6[/latex] [latex]B)~~ x+7=4x \\\\\ x-4x=-7 \\\\\ -3x=-7 \\\\\ x= \dfrac{-7}{-3}\\\\\ x= \dfrac{7}{3} [/latex] [latex]C~~2m-5=14-3m \\\\\ 2m+3m=14+5 \\\\\ 5m=19 \\\\\ m= \dfrac{19}{5} [/latex] [latex]D)~~3x+2-x=5-3 \\\\\ 3x-x=5-3-2 \\\\\ 2x=5-5 \\\\\ x= \dfrac{0}{2} \\\\\ x=0 [/latex] [latex]E)~~2y+12=y-3 \\\\\ 2y-y=-3-12 \\\\\ y=-15[/latex] Bom dia! Bons estudos!

davirobertof

5x-3x=12 2x=12 x=12/2 x=6 x-4x=-7 -3x=-7 x=7/3 2m+3m=14+5 5m=19 m=19/5 ou m=3,8 3x-x=5-3-2 2x=0 x=0 2y-y=-3-12 y= -15

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