Question
Mathematics Question on Addition and Subtraction of Algebraic Expressions
Subtract 3xy + 5yz – 7zx from 5xy – 2yz – 2zx + 10xyz
Answer
(5xy - 2yz - 2zx + 10xyz) - (3xy + 5yz - 7zx)
= 5xy - 2yz - 2zx + 10xyz - 3xy - 5yz + 7zx
=5xy - 3xy - 2yz - 5yz - 2zx + 7zx + 10xyz
= 2xy - 7yz + 5zx + 10xyz