Question

show working for these two questions
1.Add the expressions.
(5m+2n−3r)+(10m−n+6r−4)

2.Subtract the expressions.
(5m+2n+11)−(3m+7n+17)

Answer 1

Step-by-step explanation:

1.Add the expression

5m+2n-3r

10m- n-4r

15m+n-7r Answer

2.Subtract the expression

5m+2n+11

-3m-7n-17

2m-5n-6 Answer

Answer 2

As per the data given in the above question.

It is given that expression 1) add (5m+2n−3r)+(10m−n+6r−4).

2)Substract (5m+2n+11)−(3m+7n+17)

 We have to 1)Add the expressions

2)Subtract the expressions.

Thus adding the expression first we get,

(1)

$=5m+2n-3r+10m-n+6r-4\\=5m+10m+2n-n-3r+6r-4\\=15m+n+3r-4$

(2)Solving Second Expression we get,

$(5m+2n+11)-(3m+7n+17)\\5m+2n+11-3m-7n-17\\5m-3m+2n-7n+11-17\\2m-5n-6$

Hence after working we get the expressions as follow,

1)$15m+n+3r-4$

2)$2m-5n-6$