ICSE Class 7 Answered
Simplify:
a) -2 ( 3 ( x + 2 ) + 4 ) - 8 b) 4 ( -3x - 2 ( x - 9) ) - 7 ( x - 2)
Asked by Topperlearning User | 23 Sep, 2016, 01:01: PM
Expert Answer
- a) -2 ( 3 ( x + 2 ) + 4 ) - 8
= -2 ( 3x + 6 + 4) - 8
= -2 ( 3x + 10 ) - 8
= -6x - 20 - 8
= -6x - 28
b) 4 ( -3x - 2 ( x - 9) ) - 7 ( x - 2)
= 4 ( -3x -2x + 18 ) - 7x + 14
= 4 (-5x + 18) - 7x + 14
= -20x + 72 - 7x + 14
= -27x + 86
Answered by | 23 Sep, 2016, 03:01: PM