Advertisements
Advertisements
Question
Simplify:
− (− 4a − 8a)
Sum
Solution
− (− 4a − 8a)
= − (− 12a)
= 12a
shaalaa.com
Concept of Substitution
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.
c ÷ b = ...........
Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.
z ÷ x = ..................
Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.
ab + y = ...............
Evaluate:
(23 – 15) + 4
Fill in the blank:
2a + b − c = 2a + (.............)
Fill in the blank:
3x − z + y = 3x − (..............)
Fill in the blank:
6p − 5x + q = 6p − (...........)
If x = 2, y = 3 and z = 4, find the value of 3x2 – 4y2 + 2z2.
If x = a2 – bc, y = b2 – ca, and z = c2 – ab; find the value of ay – bx + cz
Multiply and then evaluate:
(x2 – y) and (xy – y2); when x = 1 and y = 2.
