Midterm Review: Literal Equations

ax + c = R
(solve for x) 

• ax = R + c
• ax = R - c
• x = a(R-c)
• x = (R-c) / a 

Solve for y:
5x - y = 16

• -y = 5x + 16
• y = 5x + 16
• x = 5y - 16
• y = 5x - 16

Solve the equation for w.  
^{x = w / a}

• w = a / x
• w = x / a
• w = ax
• x = wa

Solve the equation for d. 
d / t = r

• d = r / t
• d = t / r
• d = rt
• d = r - t

What should we do first to solve for x?
y=mx+b

• Add
• Subtract
• Multiply
• Divide

S = 3F - 24  Solve for F

• F = (S + 24)/3
• F = S/3 + 24
• F = 3S + 24
• F = 3(S + 24)

Solve:
C = 2πr, for r

• C/(2π) = r
• C + 2π = r
• C - 2π = r
• 2πC = r

a = b + c   , for  c

• c = a - b
• c = a + b
• c = ab
• c = a / b

Solve for x:
ax - b = c+d

• x = a(c + d + b) 
• x = (c + d) / (a-b) 
• x = a / (c + b + d)
• x= (c + b + d)/a

Which expression represents the value of x in the equation:
dx + e = f

• x = (f + e)/d
• x = (f - e)/d
• x = d/(e - f)
• x = d/(e + f)