Resposta :
[tex]\frac{x}{y}=\frac{12^{\div(3}}{21^{\div(3}}\\\\\\\frac{x}{y}=\frac{4}{7}[/tex]
POrtanto, [tex]\boxed{x=4}[/tex] e [tex]\boxed{y=7}[/tex]!!
POrtanto, [tex]\boxed{x=4}[/tex] e [tex]\boxed{y=7}[/tex]!!
x+y=11
x=11-y
[tex] \frac{x}{y} = \frac{12}{21} [/tex]
[tex] \frac{11-y}{y}= \frac{12}{21} [/tex]
[tex]-21y+231=12y[/tex]
[tex]-21y+231-12y=0[/tex]
[tex]-33y=-231 .(-1)[/tex]
[tex]33y=231[/tex]
y=[tex] \frac{231}{33} [/tex]
y=[tex]7[/tex]
x=11-y
x=[tex]11-7[/tex]
x=[tex]4[/tex]
x vale 4 e y 7
x=11-y
[tex] \frac{x}{y} = \frac{12}{21} [/tex]
[tex] \frac{11-y}{y}= \frac{12}{21} [/tex]
[tex]-21y+231=12y[/tex]
[tex]-21y+231-12y=0[/tex]
[tex]-33y=-231 .(-1)[/tex]
[tex]33y=231[/tex]
y=[tex] \frac{231}{33} [/tex]
y=[tex]7[/tex]
x=11-y
x=[tex]11-7[/tex]
x=[tex]4[/tex]
x vale 4 e y 7