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Subtracting linear expressions?

0 votes

(4x-8) - (-3x + 10 )
(9x - 11) - ( x -5)
(3x + 4) - (x + 1 ) 
(2x + 4 ) - (x + 2)
( 6x + 3) - (4x - 4 ) 
( x + 4) - (-2x +6 )

asked Mar 21, 2013 in PRE-ALGEBRA by angel12 Scholar

6 Answers

0 votes

(4x - 8) - (-3x + 10)

Recall : Distributive property a(b+c) = ab +ac

4x -8 +3x - 10

4x + 3x -8 -10

7x - 18.

answered Mar 22, 2013 by diane Scholar
0 votes
(9x - 11) - (x - 5) Recall : Distributive property a(b - c) = ab - ac =9x - 11 - x -1(-5) =9x - 11 - x + 5 =9x - x -11 + 5 =8x - 6.
answered Mar 22, 2013 by diane Scholar
0 votes

(3x + 4) - (x + 1)

Recall : Distributive property a(b + c) = ab + ac

3x + 4 - x -1

3x - x + 4 - 1

2x +3.

answered Mar 22, 2013 by diane Scholar
0 votes

(2x + 4) - (x + 2)

Recall : Distributive property a(b + c) = ab +ac

2x + 4 - x  - 2

2x -x + 4 - 2

x + 2.

answered Mar 22, 2013 by diane Scholar
0 votes

(6x + 3) - (4x - 4)

Recall : Distributive property a(b - c) = ab - ac

6x + 3 - 4x + 4

6x - 4x  + 3 + 4

2x + 7.

answered Mar 22, 2013 by diane Scholar
0 votes

(x + 4) - (-2x + 6)

Recall : Distributive property a(b + c) = ab +ac

x + 4 + 2x  - 6

x + 2x +4 - 6

3x - 2.

answered Mar 22, 2013 by diane Scholar
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