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Anonymous
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25x + 75 = 25*(x + 3)
.25x+3=10 .25x=7 25x=700 x=28
9x + 3 - 6x - 2 = 3x + 1
-9x-25=3 -9x=28 9x=-28 x=-28/9
-20 + 9x = -17-20 + 17 = -9x-3 = -9x |: (-9)0.333... = xx = 0.333...