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Answer:

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Step-by-step explanation:

16/3 or 5 1/3

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Answer:

[tex]u=\frac{16}{3}[/tex]

General Formulas and Concepts:

Pre-Algebra

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

Step 1: Define

[tex]\frac{7}{6} =\frac{u+4}{8}[/tex]

Step 2: Solve for u

  1. Cross-multiply:                    [tex]7(8)=6(u+4)[/tex]
  2. Multiply:                               [tex]56=6(u+4)[/tex]
  3. Distribute 6:                        [tex]56=6u+24[/tex]
  4. Isolate u term:                     [tex]32=6u[/tex]
  5. Isolate u:                              [tex]\frac{32}{6} =u[/tex]
  6. Simplify:                               [tex]\frac{16}{3} =u[/tex]
  7. Rewrite:                               [tex]u=\frac{16}{3}[/tex]

Step 3: Check

Plug in u into the original equation to verify it's a solution.

  1. Substitute in u:                    [tex]\frac{7}{6} =\frac{\frac{16}{3} +4}{8}[/tex]
  2. Add:                                     [tex]\frac{7}{6} =\frac{\frac{28}{3}}{8}[/tex]
  3. Divide:                                 [tex]\frac{7}{6} =\frac{7}{6}[/tex]

Here we see that 7/6 does indeed equal 7/6.

∴ [tex]u=\frac{16}{3}[/tex] is a solution of the equation.

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