Is there any other apps that give real answers and you don't have to pay anything or make a account? Brainy isn't working out...

What is the value of x in the following equation? -3x-2=2x+8

X+y=-4 x-y=2 use elimination with adding and subtraction

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?