Question

(it) 4p - 3p - 5p -- 7 - 4p' + 7p-2p+8
i 2b-a-50-32b + 3a--(b-c-a)
Subtract 2x - 4y + 7xy from the sum of 7 -- y2 + Bxy and -- +252 + sy.
The sum of two expressions is ** y - 3xy + 7. Tí one of them is
25 - 4y - By-7. find the other
Subtract the sum of 7m-n 8p and an 7m + 8p from the sum of
3m - 3n + 3p and 7m
2n-9p
3. How much is a + ab-e greater than 2z+ 4b-5c?
How much does l exceed x-y-4?
SE OF GROUPING SYMBOLSUN
When we make operations on two or more algebraic expressions, we separate
em by symbols of grouping which are parenthesis ), braces {i and square
brackets -
While simplifying such expressions, we first remove the grouping symbols
sing the following rules:
If a + sign precedes a symbol of grouping, the grouping symbol may
be removed without any change in the sign of the terms.
(ii) If a sign precedes a symbol of grouping, the grouping sign may be
removed and the sign of each term is changed.
(iii) If more than one grouping symbols are present in an expression,
we'll remove the innermost grouping symbol first and combine the
like terms, if any. We continue the process outwards until all the
brackets have been removed.
Example 1.
Simplify (204 hab +5) + (op-50+7).
Solution :
Since + sign precedes the 2nd parenthesis, we remove it and write the terms
as they are
(20 - Bab + 5) + (ab - 50² + 7)
-20² - bab + 5+ ab 50 4 7
= 20² - 50² – habt ab +5+7
= (2-5) a² + (- 6 + 1)ab + 12
- 3 - 5ab + 12
0​

Answer 1

Answer:

oh yes this is difficult

Explanation:

work hard and one day you'll find the answer

thanks for the points

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