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

Question

Philoid · Accepted Answer

Note: Thinking process be like, apply the Euclid’s axiom, if equals are added to equals, the wholes are equal, to show the given result.

We have, x+y=10 …(i)

and x=z …(ii)

According to the Euclid’s axiom, if equals are added to equals, the wholes are equal.

So, from Eqs. (i) and (ii)

x+y=z+y ….(iii)

From Eqs. (i) and (iii)

Z+Y=10