Getting Error 000539 from Raster Calculator?

[المشرف العام]

I am new to Arc and 10.2 but can not seem to figure out why this won't work.

Executing: RasterCalculator Con(("SLOPE_SLO.tif" >= .015) & ("SLOPE_SLO.tif" = .015) & (Raster(r"SLOPE_SLO.tif")