bugbug89
05.12.2019 •
Mathematics
Hat is the value of x in the equation 3x – 1/9y = 18, when y = 27?
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Ответ:
Step-by-step explanation:3x -1/9 (27) =18
3x - 27/9 =18
3x- 3 =18
Add 3 to both sides
3x-3+3=18+3
3x=21
Divide both sides by 3
3x/3= 21/3
x= 7
The value of x is 7
Now let's check if my answer is correct
To check it we gonna replace x by 7 and 27 for y
(3)(7) -1/9 (27) = 18
21 -1/9 (27)=18
21- 27/9 = 18
21- 3 = 18
18 = 18
Ответ:
OK first off
Ok first off you need to solve for x.y=x+6Step 1: Flip the equation.x+6=yStep 2: Add -6 to both sides.x+6+−6=y+−6x=y−6