Precalculus Examples

$3 x^{2} + 3 y^{2} - 5 = 142$

Step 1

Move all terms not containing a variable to the right side of the equation.

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Step 1.1

Add $5$ to both sides of the equation.

$3 x^{2} + 3 y^{2} = 142 + 5$

Step 1.2

Add $142$ and $5$ .

$3 x^{2} + 3 y^{2} = 147$

Step 2

Divide both sides of the equation by $3$ .

$x^{2} + y^{2} = 49$