8. Tanya está recaudando dinero para una excusión. Vende calcomanías a $1 y pulseras
de goma a $3. El costo de la excursión es de
$36. Escribe una ecuación para mostrar
cuántas calcomanías y pulseras debe vender
para recaudar el dinero para la excursión.

Did you put in a negative answer? no matter if you + - ÷ or ×, it will be negative example: -21 ÷ 3 = -7

The sum of the angles in a triangle is 180°. this is called the angle-sum property.the sum of the lengths of any two sides of a triangle is greater than the length of the third side. similarly, the difference between the lengths of any two sides of a triangle is less than the length of the third side.the side opposite to the largest angle is the longest side of the triangle and the side opposite to the smallest angle is the shortest side of the triangle.