Company A received 2131 more patents than Company B. Together, they received patents many patents did each company receive?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

Two florida panthers were weighed. one weighs 6x+21 pounds and the two together weigh 14x+11 pounds how much does he other panther weigh alone