Question
Solve the equation
r=19
Evaluate
3(r−14)+1=16
Move the expression to the left side
3(r−14)+1−16=0
Subtract the numbers
3(r−14)−15=0
Calculate
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Evaluate
3(r−14)−15
Expand the expression
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Calculate
3(r−14)
Apply the distributive property
3r−3×14
Multiply the numbers
3r−42
3r−42−15
Subtract the numbers
3r−57
3r−57=0
Move the constant to the right-hand side and change its sign
3r=0+57
Removing 0 doesn't change the value,so remove it from the expression
3r=57
Divide both sides
33r=357
Divide the numbers
r=357
Solution
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Evaluate
357
Reduce the numbers
119
Calculate
19
r=19
Show Solution

Rewrite the equation
x2+y2=361
Evaluate
3(r−14)+1=16
Evaluate
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Evaluate
3(r−14)+1
Expand the expression
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Calculate
3(r−14)
Apply the distributive property
3r−3×14
Multiply the numbers
3r−42
3r−42+1
Add the numbers
3r−41
3r−41=16
Rewrite the expression
3r=41+16
Simplify the expression
3r=57
Square both sides of the equation
(3r)2=572
Evaluate
9r2=572
To covert the equation to rectangular coordinates using conversion formulas,substitute x2+y2 for r2
9(x2+y2)=572
Evaluate the power
9(x2+y2)=3249
Solution
x2+y2=361
Show Solution
