document.write( "Question 195038: PLEASE I need help on this test question asap. Thanks.
\n" ); document.write( "Solve each equation for x.
\n" ); document.write( " $\"sqrt%289x%2B378%29=3sqrt%287x%29\"$
\n" ); document.write( "Step 1: Square both sides of the equation. Show your work.
\n" ); document.write( "Step 2: Solve the equation from step 1 for x. Show your work.
\n" ); document.write( "Step 3: Check your solution from step 2 in the original equation. Show your work.
\n" ); document.write( "Step 4: State the solution for the equation $\"sqrt%289x%2B378%29=3sqrt%287x%29\"$ \n" ); document.write( "

Algebra.Com's Answer #146318 by checkley77(12844) $\"\"$ $\"About$

You can put this solution on YOUR website!
sqrt(9x+378)=3sqrt(7x)
\n" ); document.write( "9x+378=9*7x
\n" ); document.write( "9x+378=63x
\n" ); document.write( "9x-63x=-378
\n" ); document.write( "-54x=-378
\n" ); document.write( "x=-378/-54
\n" ); document.write( "x=7 ans.
\n" ); document.write( "proof:
\n" ); document.write( "sqrt(9*7+378)=3sqrt7*7
\n" ); document.write( "sqrt(63+378)=3sqrt49
\n" ); document.write( "sqrt441=3*7
\n" ); document.write( "21=21 \n" ); document.write( "

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