a: =>x/6=-8/6
=>x=-8
b: =>x=-16*5/4=-20
c: =>15/x=3/2
=>x=10
d: =>x=-5*13/12=-65/12
\(\text{#TNam}\)
`a, x/6=-24/18`
`18x=-24*6`
`18x=-144`
`x=-144 \div 18`
`x=-8`
`b, 4/5=-16/x`
`4x=-16*5`
`4x=-80`
`x=-80 \div 4`
`x=-20`
`c, 3/-2=-15/x`
`3x=-2*-15`
`3x=30`
`x=30 \div 3`
`x=10`
`d, 5/x=12/-13`
`12x=5*-13`
`12x=-65`
`x=-65 \div 12`
`x=-65/12`