Solving for a Variable Practice

a=3p+1
solve for p

• p=3a+1
• p=(a+1)/3
• p=(a-1)/3
• p=a+3

2d-1=s
solve for d

• d=2s+1
• d=2s-1
• d=(s+1)/2
• d=(s-1)/2

S=6n-12
solve for n

• n=(S/6)+2
• n=(S/6)+1/2
• n=(S/2)+6
• n=6S+12

ax+r=7
solve for r

• r=7/ax
• r=7-ax
• r=7+ax
• r=7ax

ax+r=7
solve for r

• r=7/ax
• r=7-ax
• r=7+ax
• r=7ax

Solve for y:
8x + 4y= 16

• y = -8x + 16
• y = 2x -4
• y = -2x + 4
• y = -8x + 12

• x=16-y

• x=y+16

• x=y-16

• y=x+16

• x=-15+y

• x=y+15

• y=x+15

• y=x-15

• Not enough information to solve