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If $x + y = 10$ and $y = 4$ , using Euclid's axiom about subtracting equals, the value of $x$ is:

Class 9Euclid's AxiomsGeometry — Foundations

A7
B5
C12
D6

Step-by-Step Solution

Subtract the equal quantity

y = 4

from both sides:

x = 10 - 4 = 6

(subtracting equals from equals).

Answer: D) 6

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