Advertisements
Advertisements
Question
Subtract: m + n from 3m – 7n
Sum
Advertisements
Solution
3m – 7n – (m + n) = 3m – 7n + (– m – n)
= 3m – 7n – m – n
= (3m – m) + (– 7n – n)
= (3 – 1)m + (– 7 – 1)n
= 2m + (– 8)n
= 2m – 8n
shaalaa.com
Is there an error in this question or solution?
Chapter 3: Algebra - Exercise 3.2 [Page 63]
APPEARS IN
RELATED QUESTIONS
Subtract the second expression from the first.
(5x + 4y + 7z); (x + 2y + 3z)
Solve:
(7m − 5n) − (−4n − 11m)
Subtract: 4k from 12k
Subtract:
–3p2 + 3pq + 3px from 3p(– p – a – r)
Subtract the following expressions:
–7p2qr from –3p2qr
Subtract the following expressions:
–2a2 – 2b2 from –a2 – b2 + 2ab
Subtract the following expressions:
2(ab + bc + ca) from –ab – bc – ca
How much does 93p2 – 55p + 4 exceed 13p3 – 5p2 + 17p – 90?
Subtract 9a2 – 15a + 3 from unity.
If A = 3x2 – 4x + 1, B = 5x2 + 3x – 8 and C = 4x2 – 7x + 3, then find:
B + C – A
