First, add #color(red)(150)# to each side of the inequality to isolate the #w# term while keeping the inequality balanced:
#-150 + color(red)(150) + 75w < 200 + color(red)(150)#
#0 + 75w < 350#
#75w < 350#
#(75w)/color(red)(75) < 350/color(red)(75)#
#(color(red)(cancel(color(black)(75)))w)/cancel(color(red)(75)) < (25 xx 14)/color(red)(25 xx 3)#
#w < (color(red)(cancel(color(black)(25))) xx 14)/color(red)(color(black)(cancel(color(red)(25))) xx 3)#
#w < 14/3#