Respuesta:
es igual a 43
Explicación paso a paso:
3(x-8)=21 . 5
3(x-8)=105
3x-24 =105
3x=105+24
3x=129
x= 129/3
x= 43
3(43-8)/5 =21
3 (35)/5=21
105/5 =21
21=21
[tex]\boxed{\frac{3\left(\text{x}-8\right)}{5}=21}[/tex]
[tex]\mathrm{Multiplicamos \ por \ 5:}[/tex]
[tex]\frac{5\cdot \:3\left(x-8\right)}{5}=21\cdot \:5[/tex]
[tex]3\left(x-8\right)=105[/tex]
[tex]\mathrm{Dividimos \ entre \ 3:}[/tex]
[tex]\frac{3\left(x-8\right)}{3}=\frac{105}{3}[/tex]
[tex]x-8=35[/tex]
[tex]x=35+8[/tex]
Solución:
[tex]\boxed{\text{x}=43}[/tex]
Saludos...
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Respuesta:
es igual a 43
Explicación paso a paso:
3(x-8)=21 . 5
3(x-8)=105
3x-24 =105
3x=105+24
3x=129
x= 129/3
x= 43
prueba :
3(43-8)/5 =21
3 (35)/5=21
105/5 =21
21=21
Respuesta:
[tex]\boxed{\frac{3\left(\text{x}-8\right)}{5}=21}[/tex]
[tex]\mathrm{Multiplicamos \ por \ 5:}[/tex]
[tex]\frac{5\cdot \:3\left(x-8\right)}{5}=21\cdot \:5[/tex]
[tex]3\left(x-8\right)=105[/tex]
[tex]\mathrm{Dividimos \ entre \ 3:}[/tex]
[tex]\frac{3\left(x-8\right)}{3}=\frac{105}{3}[/tex]
[tex]x-8=35[/tex]
[tex]x=35+8[/tex]
Solución:
[tex]\boxed{\text{x}=43}[/tex]
Saludos...