Question

Which of the following equations does not require two steps to solve?

negative two a minus ten equals nine

eleven minus x equals 3

t minus fifteen equals negative seven

negative eighteen plus two n equals negative six
if you help i will give a medal and become a fan

Answer 1

some one please help me

Answer 2

Do you want the answer or do you want to think it through?

Answer 3

i need the answer

Answer 4

I see two of them that are one-step answers, the rest are multiple-step answers, so technically ALL of them do not require two answers.

Answer 5

errr steps.

Answer 6

let's first turn the words into numbers and variables. We have:

-2a - 10 = 9

11 - x = 3

t - 15 = -7

-18 + 2 = -6

Answer 7

On each one, the first thing you need to do is isolate the variable

Answer 8

sigh i mis-typed the last equation. it should read

-18 +2n = -6

Answer 9

on how many of them can you isolate a positive variable in one step?

Answer 10

b

Answer 11

okay, let's work b.

subtract 11 from both sides.

Answer 12

what are you left with?

Answer 13

14 i think right

Answer 14

11 - x = 3
11 - x - 11 = 3 - 11
-x = ?

Answer 15

-8

Answer 16

correct. now let's make that negative variable positive.

Answer 17

to that, we multiply both sides by -1

Answer 18

what do you mean by that

Answer 19

11 - x = 3
11 - x - 11 = 3 - 11
-x = -8
-1 * x = -8 * -1
x = 8

this is 2 steps because you first subtracted 11 from both sides, then multiplied by -1

Answer 20

re-reading, there is 2 more that require at least 2 steps, and 1 that is one single step. i apologize for mis-typing earlier

Answer 21

c

Answer 22

very good. now show me why it only requires one step.

Answer 23

because when you do the reverse operation you do
15+7=22
so that is how you get the answer

Answer 24

first thing you want to do in all 4 of these questions is to isolate the variable. in this case, you simply need to add 15 to both sides. in this case, the answer is

t - 15 = -7
t - 15 + 15 = -7 + 15
t = ?

Answer 25

8

Answer 26

technically it is two steps because first you are adding something to both sides, then in second step you are combining like terms, but since combining like numbers is "automatic" it is not considered a step by itself

Answer 27

but your instructor will most likely choose c as the "not two steps" fulfillment of the question

Answer 28

thank you so much @Firebrand

Answer 29

:) my pleasure! I hope this helps you with future problems similar to these