alleryx + y = 7 आणि x - y = 3 यांची बेरीज केल्यास कोणत्या चलाचा लोप होतो?
Aदोन्ही
Bदोन्हीपैकी एकही नाही
Cy
Dx
Answer & Solution
Correct answer: C. y
समीकरणांची बेरीज केल्यावर +y आणि -y ही पदे रद्द होतात.
Keep practising Elementary Algebra
Browse all Elementary Algebra questions for RRB NTPC, or explore more Mathematics topics.
Related questions
RRB NTPC · Algebraic ExpansionsRRB NTPC · Solving Linear EquationsExpand and simplify the algebraic expression: (x + 3)(x - 3)Evaluate the quadratic expression 2x^2 + 5x - 4 when x = 3:If a + b = 10 and a - b = 4, what is the value of a?Solve for x: 3x - 7 = 14. What is the value of x?RRB NTPC · Solve Linear EquationsWhen a system of two lines on the plane has no intersection, what is its solution set?