Samuel is solving an equation for y. His first step id to add 7 to both sides. Which equation is he solving?

2y-7=15
2y-15=7
2y+15=7
2y+7=15

3 answers

2y-7=15
Kelia is solving an equation for x. Her second step is to multiply both sides of the equation by 4. Which equation is she solving?
6+4x=1
4+6x=1
6+x/4=1
4+x/+6=1
Kelia is solving the equation: 6+4x=1