Do distributive property to get rid of the parenthesis 3x + 3 = -2x + 2 + 6 combine like terms 3x + 3 = -2x + 8 move the -2x over by addition 5x + 3 = 8 move the 3 over by subtraction 5x = 5 now divide by 5 x = 1
2 muffins: 1/2 cup of butter. 3 muffins: 3/4 cup of butter. 4 muffins: 1 cup of butter. 5 muffins: 1 & 1/4 cups of butter. 6 muffins: 1 & 1/2 cups of butter. 7 muffins: 1 & 3/4 cups of butter. 8 muffins: 2 cups of butter.