Find the number whose sum is 50 if the first number is 3 times the difference between the second and the third and the second number is two more than twice the third. solve the problem using matrices

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.