<PRE><B>Question 596064</B>
{{{0.3x-0.4=0.2x+7}}} Start with the given equation.



{{{10(0.3x-0.4)=10(0.2x+7)}}} Multiply both sides by 10 to clear out the decimals.



{{{3x-4=2x+70}}} Distribute and multiply.



{{{3x=2x+70+4}}} Add {{{4}}} to both sides.



{{{3x-2x=70+4}}} Subtract {{{2x}}} from both sides.



{{{x=70+4}}} Combine like terms on the left side.



{{{x=74}}} Combine like terms on the right side.



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Answer:


So the solution is {{{x=74}}} 
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