Mathematics
Grade-7
Easy
Question
90m + 40 - 25 + 60n - 20m is equivalent to ________.
- 110m + 60n + 15
- 70m + 60n + 15
- 130mn + 15
- 70m + 60n + 65
Hint:
Group together the like terms and perform the operations given
The correct answer is: 70m + 60n + 15
Given 90m + 40 - 25 + 60n - 20m
Step 1 :
Grouping like terms together
=90m - 20m +60n +40 – 25
Step 2 :
Perform operations between them .
=90m - 20m +60n +40 – 25
70m+60n+15
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