document.write( "Question 351813: Hi, The question is 10x+18=48 they want to know to know if you add 4 to each side of the equation HOW do you know that the two sides of the equation are still equal. plzzzz help thanks, Ryan \n" ); document.write( "
Algebra.Com's Answer #251516 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
That's a fundamental rule of mathematics.
\n" ); document.write( "if \"a=b\", then \"a%2Bc=b%2Bc\".
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