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2l3x+7l-9=25 divide each side by 2
l3x+7l-9=12.5 add each side by 9
l3x+7l=21.5 since its absolute value there's two cases:
3x+7=21.5 solve for x: subtract 7 from both sides and divide by 3
x=4.833
and 3x+7=-21.5 solve for x: subtract 7 from both sides and divide by 3 again
x=-9.5
so x=4.833 or -9.5
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