2x{350:[491-3x(125 - 78 )] +350 } = 2x{350:[491-3x(47)] +350 } = 2x{350:[491-141x] +350 } = 2x{350:[491-141x] +350 } = 2x{350:350-141x +350 } = 2x{1-141x } = 2-282x
2x{350:[491-3x(125 - 78 )] +350 } = 2x{350:[491-3x(47)] +350 } = 2x{350:[491-141x] +350 } = 2x{350:[491-141x] +350 } = 2x{350:350-141x +350 } = 2x{1-141x } = 2-282x