Solving for One Variable in Terms of Another Variable

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# Solving for One Variable in Terms of Another Variable - PowerPoint PPT Presentation

Solving for One Variable in Terms of Another Variable. Solve the equation for b. A = bh Which variable am I solving for? h h Divide by h on both sides. A = b Solved for b . h. Solve the equation for h.

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### Solving for One Variable in Terms of Another Variable

Solve the equation for b.
• A = bh Which variable am I solving for?
• h h Divide by h on both sides.
• A = b Solved for b. h
Solve the equation for h.
• A = bh Which variable am I solving for?
• b b Divide by b on both sides.
• A = h Solved for h. b
Solve the equation for h.
• V = lwh Which variable am I solving for?
• lw lw Divide by lw on both sides.
• V = h Solved for h. lw
Solve the equation for w.
• V = lwh Which variable am I solving for?
• lh lh Divide by lh on both sides.
• V = w Solved for w. lh
Solve the equation for .
• A = r2Which variable am I solving for?
• r2r2Divide by r2 on both sides.
• A = Solved for . r2
Solve the equation for w.
• P = 2l + 2wWhich variable am I solving for?
• -2l-2lSubtract 2l from both sides.
• P – 2l = 2wCan’t combine P and -2l
• 2 2 Divide both sides by 2.
• P – 2l= w Solved for w. 2
Solve the equation for h.
• A = bh Which variable am I solving for?
• b b Divide by b on both sides.
• A = h Multiply both sides by 2. b
• (2)A = h(2) Multiply both sides by 2. b
• 2A = hSolved for h.b
Solve the equation for .
• V = r2hWhich variable am I solving for?
• r2hr2hDivide by r2h on both sides.
• V = Solved for . r2h
Solve the equation for z.
• x + y + z = P Which variable am I solving for?
• -x -y-x -ySubtract x and y from both sides.
• z = P – x – y Can’t combine P, -x and -y
• z = P – x – y Solved for z.
Solve the equation for n.
•  - l= m Which variable am I solving for?
• +l +lAdd l to both sides.
•  = m + l Can’t combine m and l
• (k) = k(m + l)Multiply both sides by k.
• n = km + kl Solved for n.
Solve the equation for y in terms of x.
• 5x + 6y = 24 Which variable am I solving for?
• -5x -5x Subtract 5x from both sides.
• 6y = -5x + 24 Can’t combine -5x and 24
• 6 6 6 Divide by 6.
• y = -x + 4 Solved for y.