How many solutions does the equation have?

What are “like terms”? why can we only add like terms?

How many $20 bills do you need to have to make $280

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle