Question

Subtract the sum of (7pq - 3qr + 4rs) and (9qr + 3rs - 5pq) from the sum of (29r - 4rs + 6pq) and (11pq-3qr+5rs).​

Answer 1

Answer:

23qr - 6rs + 15pq

Step-by-step explanation:

1. Sum = ( 7pq - 3qr + 4rs ) + ( 9qr + 3rs - 5pq)
2. Sum = 7pq - 3qr + 4rs + 9qr + 3rs - 5pq
3. -6rsSum = 2pq + 6qr + 7rs

1. Sum = (29qr - 4rs + 6pq ) + ( 11pq - 3qr + 5rs)
2. Sum = 29qr - 4rs + 6pq + 11pq - 3qr + 5rs
3. Sum = 26qr + rs + 17pq

1. Difference = (26qr + rs + 17pq) -(2pq + 6qr + 7rs)
2. Difference = 29qr + rs + 17pq - 2pq - 6qr - 7rs
3. Difference = 23qr - 6rs + 15pq

Answer 2

Question:-

Subtract the sum of (7pq - 3qr + 4rs) and (9qr + 3rs - 5pg) from the sum of (29r - 4rs + 6pg) and

(11pq-3qr+5rs)

Answer:-

Sum of (7pq - 3qr + 4rs) and (9qr + 3rs - 5pq) :-

(7pq - 3qr + 4rs) + (9qr + 3rs 5pq)

➞ 7pq - 3qr + 4rs +9qr + 3rs 5pq

➞ 7pq - 5pq + 9gr - 3gr + 4rs + 3rs

➞ 2pq +6qr + 7rs

Sum of (29qr - 4rs + 6pg) and (11pq-3qr+5rs) :- (29gr - 4rs + 6pq) + (11pq-3qr+5rs)

➞ 29gr - 4rs + 6pq + 11pq - 3gr + 5rs

➞ 29qr - 3qr + 5rs - 4rs + 6pq + 11pq

➞ 26qr + rs + 17pq

Subtracting their sum :-

["From" number comes first. ]

[ Original signs are changed to opposite sign while removing the bracket if there is minus sign

before the bracket ]

➞ (26qr + rs + 17pq) - (2pq + 6qr + 7rs)

➞ 26qr + rs + 17pq - 2pq - 6qr 7rs

➞ 26qr - 6qr - 7rs + rs + 17pq - 2pq

➞ 20qr - 6rs + 15pq

Ans. 20qr - 6rs + 15pq