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Operations on Algebraic Expressions — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSOperations on Algebraic Expressions1 Mark
MCQ
Assertion (A): If we add $(-a+b-c)$ to $(a-b+c)$, we get $(2 a+2 b+2 c)$.
Reason (R): While adding algebraic expressions we add the like terms.
  • A
    Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
  • B
    Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A).
  • C
    Assertion (A) is true but Reason (R) is false.
  • ✓
    Assertion (A) is false but Reason (R) is true.
✓

Answer

Correct option: D.
Assertion (A) is false but Reason (R) is true.
(D) Assertion (A) is false but Reason (R) is true.
$(a-b+c)+(-a+b-c)=a-b+c-a+b-c=(a-a)+(-b+b)+(c-c)=0$

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