What is (x-4)*2-(x+1) ?

The solution to (x-4)*2-(x+1) is x-9

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simplify (x-4)*2-(x+1)

simplify

(x - 4) \cdot 2 - (x + 1)

x - 9

Solution steps

(x - 4) \cdot 2 - (x + 1)

Apply the distributive law:

- (a + b) = - a - b

- (x + 1) = - x - 1

= (x - 4) \cdot 2 - x - 1

= 2 (x - 4) - x - 1

Expand

2 (x - 4) : 2 x - 8

= 2 x - 8 - x - 1

Group like terms

= 2 x - x - 8 - 1

Add similar elements:

2 x - x = x

= x - 8 - 1

Subtract the numbers:

- 8 - 1 = - 9

= x - 9

x^{3} - 8 x^{2} + 21 x - 18

64 + 9

3 (y + 2)

(3 x + y)^{11}

(2 + i) - (9 i - 3)