Respuesta :
[tex]3.5x=6.65[/tex]
Divide both sides by 3.5:
[tex]\begin{gathered} x=\frac{6.65}{3.5} \\ x=1.9 \\ ---- \\ 3.5(1.9)=6.65 \\ 6.65=6.65 \\ True \end{gathered}[/tex]----------------------------------------------------------------
[tex]489=\frac{n}{2.3}[/tex]Multiply both sides by 2.3:
[tex]\begin{gathered} n=489\cdot2.3 \\ n=1124.7 \\ ------- \\ 489=\frac{1124.7}{2.3} \\ 489=489 \\ True \end{gathered}[/tex]----------------------------------------
[tex]\frac{Q}{0.45}=40[/tex]Multiply both sides by 0.45:
[tex]\begin{gathered} Q=40\cdot0.45 \\ Q=18 \\ ------ \\ \frac{18}{0.45}=40 \\ 40=40 \\ True \end{gathered}[/tex]----------------------------------
[tex]4960=248m[/tex]Divide both sides by 248:
[tex]\begin{gathered} m=\frac{4960}{248} \\ m=20 \\ -------- \\ 4960=248(20) \\ 4960=4960 \\ True \end{gathered}[/tex]----------------------------------
[tex]64=\frac{n}{1.9}[/tex]Multiply both sides by 1.9:
[tex]\begin{gathered} n=64\cdot1.9 \\ n=121.6 \\ -------- \\ 64=\frac{121.6}{1.9} \\ 64=64 \\ True \end{gathered}[/tex]