Question

Sederhanakan bentuk aljabar berikut ini :
1. ( 2x + 8 ) + (4x - 5 - 5y )
2. (2x + 5) - ( x - 3 )
3. ( 5a - 6 + ab ) - ( a + 2ab - 1 )

Answer 1

1. (2x + 8) + (4x - 5 - 5y)
     2x + 8 + 4x - 5 - 5y
     2x + 4x - 5y + 8 - 5
     6x - 5y + 3

2. (2x + 5) - (x - 3)
     2x + 5 - x + 3
     2x - x + 5 + 3
     x + 8

3. (5a - 6 + ab) - (a + 2ab - 1)
     5a - 6 + ab - a - 2ab + 1
     5a - a + ab - 2ab - 6 + 1
     4a - ab - 5

Answer 2

1. 2x + 8 + 4x - 5 - 5y = ( 2x + 4x ) + ( 8 - 5) - 5y = 6x + 3 - 5y

2. 2x + 5 - x + 3 = ( 2x - x) + ( 5 + 3) = x + 8

3. 5a - 6 + ab - a - 2ab + 1 = ( 5a - a) + ( ab - 2ab ) + ( -6 + 1) = 4a - ab - 5