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Add: 14x + 10y - 12xy - 13, 18 - 7x - 10y + 8xy, 4xy - CBSE Class 7 - Mathematics

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Question

Add: 14x + 10y - 12xy - 13, 18 - 7x - 10y + 8xy, 4xy

Solution

(14+ 10y - 12xy - 13) + (18 - 7x - 10y + 8yx) + 4xy

= 14+ 10y - 12xy - 13 + 18 - 7x - 10y + 8yx + 4xy

= 14x - 7x + 10y - 10y - 12xy + 8yx + 4xy - 13 + 18

= x (14 - 7) + (10 - 10) + xy (-12 + 8 + 4) - 13 + 18

= 7x + 5

  Is there an error in this question or solution?

APPEARS IN

 NCERT Solution for Mathematics for Class 7 (2018 to Current)
Chapter 12: Algebraic Expressions
Ex. 12.20 | Q: 2.05 | Page no. 239
Solution Add: 14x + 10y - 12xy - 13, 18 - 7x - 10y + 8xy, 4xy Concept: Addition and Subtraction of Algebraic Expressions.
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