Question

What is 15 = -y + 10

Answer 1

15=-y+10
=-10+15=-y
=5=-y
=-5=y
welcome :)

Answer 2

It's a simple linear equation in a single variable, 'y' . Its solution is the number
that 'y' must be in order to make the equation a true statement. Here's how to
find the solution:

Write the equation: 15 = -y + 10

Subtract 10 from each side: 5 = -y

Multiply each side by -1 : -5 = y