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RD Sharma Solutions Class 7 Mathematics Solutions for Algebraic Expressions Exercise 7.2 in Chapter 7 - Algebraic Expressions
Question 1 Algebraic Expressions Exercise 7.2
Add the following:
(i) 3x and 7x
(ii)-5xy and 9xy
Answer:
(i) Given 3x and 7x 3x+ 7x = (3 + 7) x
= 10x
(ii) Given -5xy and 9xy -5xy + 9xy = (-5 + 9) xy
= 4xy
Video transcript
"hello student welcome to lido homework
let us start solving the question that's
given on our screen today
add the following so you just need to
make sure that
the terms that you are adding should be
like terms
so here it's clearly like terms so you
can write it as
add the coefficient 3 plus 7 x
is equal to 10 x
right this is equal to
10 x okay this one
again it's like term x y and x y are
equal
so you just have to subtract or add the
coefficient
minus 5 plus 9 x
y so this is equal to
4 x y clear
so if you still have any doubt put a
message in the comment section
and subscribe to our channel for regular
updates bye"
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