Question

3 Answer the following questio
a. Take away 5e + 8r - 4t from 9e + 7r - 9t.
b. By how much does 11a + 136 - cexceed 7a + 12b - 2c?
C. Take away 6a + 146 - 2c from the sum of 3a + 5b and 2a + 9b - 4c.
d. From the sum of 13a + 2b - 6c and 5a + 7b - 11c, subtract a + 15b - 12c.
e. If A = 76 - 36 + 10d, B = 4b - C+8d and C = 2a + b + c, find:
i. A+B
ii. A+B+C iii. B-C
iv. 2A-C
f. Find the perimeter of a triangle with sides 4a + 11b -2c, 3a + b + c and a + 156
g. Find the perimeter of a rectangle with length 6a + b and breadth a - b - c.
h. Find the perimeter of an isosceles triangle with base 8 cm and each of the
equal sides measuring 4.5 cm.​

Answer 1

Answer:

1. A

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Answer 2

a. 4e-r-5t

b. 4a+136+12b+c

c. Sum will be 5a+14b-4c.

Difference will be -a-146-2c.

d. Sum will be 18a+9b-17c.

Difference will be 17a-6b-5c

e. I. 76-36+10d+4b-c+8d

Which is, 40+28d+4b-c.

ii. 76 - 36 + 10d+4b - C+8d+2a + b + c

Which is, 40+18d+5b+2a.

iii. 4b-c+8d-2a-b-c

Which is, 12d-2a-b-2c.

iv. 80+20d-2a-b-c

f. Sum of 3 sides

4a+11b-2c+3a + b + c+ a + 156

8a+12b-c+156.

g. 2(6a + b + a - b - c)

2(7a-c)

14a-2c.

h. 4.5+4.5+8=9+8=17cm.

Hope this helped.