10-___+9=59
3 answers
I think u subtract 59 by 19(10+9) which is 40
Make an equation
put a variable as the blank
10-X+9=59
You need to combine like terms (10 and 9)
19-X=59
Now you want to get the variable all by itself, so you need to get rid of 19. To get rid of 19 you need to subtract 19, make sure you do it to both sides, to keep the balance of the equation.
So you end up with
-X=40
So now you have the opposite of X = 40, what is the opposite of 40? -40
To check it, plug your answer into the equation
10-(-40)+9 = 59
Combine like terms and you have
19-(-40)=59
This is the same as 19 taking away the opposite of 40, which is the same as adding +40
19+40= 59 checked
put a variable as the blank
10-X+9=59
You need to combine like terms (10 and 9)
19-X=59
Now you want to get the variable all by itself, so you need to get rid of 19. To get rid of 19 you need to subtract 19, make sure you do it to both sides, to keep the balance of the equation.
So you end up with
-X=40
So now you have the opposite of X = 40, what is the opposite of 40? -40
To check it, plug your answer into the equation
10-(-40)+9 = 59
Combine like terms and you have
19-(-40)=59
This is the same as 19 taking away the opposite of 40, which is the same as adding +40
19+40= 59 checked
60-10+9