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It is known that x + y = 10 and that x = z. Show that z + y = 10?

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Best answer

According to the question,

We have,

x+y=10 …(i)

And, x=z …(ii)

Applying the Euclid’s axiom,

“if equals are added to equals, the wholes are equal”

We get,

From Eqs. (i) and (ii)

x+y=z+y ….(iii)

From Eqs. (i) and (iii)

z+y=10

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