Write the algebraic expression for: twice a number, n, increased by 9. what do i write

2n + 9

Step-by-step explanation:

a number -   n

twice a number -   2n

twice a number, n, increased by 9 -   2n + 9

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: