<PRE><B>Question 213278</B>
2(3x)+2(4x)=70
6x+8x=70
12x=70
x=5
3x=15
4x=20
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2(4x)+2(5x)=70
8x+10x=70
18x=70
x=3.89
4x=15.6
5x=19.4
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70/4=17.5
17.5*4=70</PRE>