Algebra
Calculus
Trigonometry
Matrix
Question
Solve the equation
r=0
Evaluate
−6r=−3(r×7)
Remove the parentheses
−6r=−3r×7
Multiply the terms
−6r=−21r
Add or subtract both sides
−6r−(−21r)=0
Subtract the terms
More Steps
Evaluate
−6r−(−21r)
Collect like terms by calculating the sum or difference of their coefficients
(−6−(−21))r
Subtract the terms
More Steps
Evaluate
−6−(−21)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
−6+21
Add the numbers
15
15r
15r=0
Solution
r=0
Show Solution
Rewrite the equation
x2+y2=0
Evaluate
−6r=−3(r×7)
Evaluate
More Steps
Evaluate
−3(r×7)
Remove the parentheses
−3r×7
Multiply the terms
−21r
−6r=−21r
Rewrite the expression
15r=0
Square both sides of the equation
(15r)2=0
Evaluate
225r2=0
To covert the equation to rectangular coordinates using conversion formulas,substitute x2+y2 for r2
225(x2+y2)=0
Calculate
225x2+225y2=0
Solution
x2+y2=0
Show Solution
Graph
