Posted by Clare on Wednesday, October 12, 2011 at 6:23pm.
I got 1.12/.55
.05 x-.6x+1.2= .08
-.55x= -1.12
-1.12/-.55
That doesn't work because -.6 x 2= -1.2, not positive 1.2. And it still doesn't equal .08 when you plug it in.
1--.05x-.6(x+2)=.08
2--Multiplying by 100 yields
...5x - 60x - 120 = 8
3--Collecting terms, -55x = 128
4--Therefore x = -128/55
5--Checking:
...05(-128/55) - .6(-128/55 - 1.2 = .08
...Multiplying through by 55 yields
....05(-128) - .6(-128) - 66 = 4.4
6----6.4........+.76.8...-66..= 4.4
---------76.8 = 76.8
x = -128/55
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