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Question
Verify That`("x"+"y") xx"z"="x"xx"z"+"y"xx"z"`,If
`"x"=4/5,"y"=(-2)/3 and "z"=-4`
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Solution
`"x"=4/5,"y"=(-2)/3 and "z"=-4`
Using, `("x+y")xx"z"="x"xx"z"xx"y"xx"z"`
⇒`(4/5+(-2)/3)xx-4=4/5xx-4+(-2)/3xx-4`
⇒`((4xx3)/(5xx3)-(2xx5)/(3xx5))xx-4=(-16)/5+8/3`
⇒`(12-10)/15xx-4=(-48+40)/15`
⇒ `2/15xx(-4)`
=`(-8)/15=(-8)/15`
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