Homework Help

When x=7,  5-3(x-1)= ?

patriciabmccarthy's profile pic

Posted via web

dislike 2 like

When x=7,  5-3(x-1)= ?

7 Answers | Add Yours

mjripalda's profile pic

Posted (Answer #1)

dislike 1 like

To evaluate the expression, plug-in the value of x.

`5-3(x-1)`

`=5-3(7-1)`

From here, follow the order of operations which is PEMDAS, So,simplify the expression insides the parenthesis.

`=5-3(6)`

Then, multiply.

`=5-18`

And subtract.

`=-13`

Hence, when `x=7` ,   `5-(x-1)=-13` .

pramodpandey's profile pic

Posted (Answer #2)

dislike 1 like

`5-3(x-1)=5-3x+3=5+3-3x=8-3x`

`8-3x=8-3*7=8-21=-13`

When x=7, => -13

atyourservice's profile pic

Posted (Answer #3)

dislike 0 like

x=7,  5-3(x-1)=

5-3(7-1)

5-3(6)

5-18=-13

-13

zumba96's profile pic

Posted (Answer #4)

dislike 0 like

Plug it in

 x=7,  5-3(x-1)= ?

5-3(7-1)=5-3(6)

By the Order of Operations

5-18=

-13

jess1999's profile pic

Posted (Answer #5)

dislike 0 like

If x = 7 then 5 - 3 ( x - 1 )=

First plug in 7

By plugging in 7, your equation should look like

5 - 3 ( 7 - 1 ) Now subtract 7 and 1

By subtracting, your equation should look like

5 - 3 ( 6 ) Now distribute the 3

By distributing, your equation should look like

5 - 18 Lastly just subtract 5 with 18

By subtracting you should get

= -13 which is your answer

nisarg's profile pic

Posted (Answer #6)

dislike 0 like

When x=7,  5-3(x-1)= ?

so substitute 7 in the place of x

5-3(7-1)  follow pemdas and simplify

5-3(6)           subtract 1 from 7

5-18          multiply 3*6

-13            subtract 18 from 5

Jyotsana's profile pic

Posted (Answer #7)

dislike 0 like

5-3(x-1)=?   x=7

5-3(7-1)

5-3(6)

5-18

-13

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes