Solve the following equation for x: 5x + 3y = 15.
x =-3/5 y − 3
x =-3/5 y + 3
x = 3/5 y + 3
x =3/5 y − 3

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

Evaluate the expression for the given value of the variable 7a - 4a for a =8

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?