X/9 -1=5 X=? 9y+1=7 Y=? 3z/7 + 3=-7 Z=
2 answers:
1.
x/9 -1 = 5
add 1 to both side of the equation
x/9 = 6
multiply both side of the equation by 9
x = 54
2.
9y + 1 = 7
subtract 1 from each side of the equation
9y = 6
divide both side of the equation by 9
y =
divide the numerator and the denominator by 3 in order to simplify your fraction
y =
3.
3z/7 + 3 = -7
subtract 3 from each side of the equation
3z/7 = -10
multiply both side of the equation by 7
3z = -70
divide both side of the equation by 3
z =
There you go! I really hope this helped, if there's anything just let me know! :)
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y = - 5
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- 12 + 9y = - 57 ( add 12 to both sides )
9y = - 45 ( divide both sides by 9 )
y = = - 5
Answer:
Both proportions are equivalent.
Step-by-step explanation:
We have been given two proportions and
. We are asked to find why the solutions to our given proportions are equal.
We can solve proportions by cross multiplying them.
After cross multiplying our both proportions we will get same equation that is:
Since we get same equation after cross multiplying both proportions, therefore, the solutions to the given proportions would be same.