Question

It is known that x+y=10,and that x=z show that z+y=10

Answer 1

Step-by-step explanation:

x+y=10(i)

x=z ...... (ii)

Substituting equation (ii) in eq (i)

z+y=10

Hence proved

Answer 2

Step-by-step explanation:

we know that ,

x+y=10

now,

x+y=10 equ--- (i)

x=z equ--- (ii)

from equ (i) and (ii)

z+y=10

x+y=10 (because z=x)

So, proved