7 + 4x = 1x + 2x I simplified the problem and got 7 + 4x = 3x, however when I do -4 to both sides I end up with 7 = -1 and the answer would be -7 and I checked and said it was wrong so I’m stuck here.

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?