First, work with the value inside the brackets. The bracket changes the value of whatever number to its absolute value. Absolute value is the distance from that number to zero. So then, it would be 58. Then there's a negative outside the brackets so that means it turns the number into a negative. Thus, the answer is -58.
Step-by-step explanation: add the equations in order to solve first variable. put the value in the other equations to solve the remaining variables- math way