Answer:
1. -21
2. 0
3. [tex]-\frac{5}{6}[/tex]
Step-by-step explanation:
1. 18 = [tex]-\frac{6}{7} h[/tex]
multiply both sides by the reciprocal of -6/7.
[tex](-\frac{7}{6} )[/tex]18 = [tex]-\frac{6}{7} h[/tex][tex](-\frac{7}{6} )[/tex]
-21 = h
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2. [tex]-\frac{3}{4} x=\frac{21}{8} x[/tex]
find the LCM of both fractions.
LCM = 8
multiply both fractions by the LCM
[tex]-\frac{3}{4} x(8)=\frac{21}{8} x(8)[/tex]
-6x = 21x
subtract 21x from both sides
-6x-21x = 21x-21x
-27x = 0
isolate x
-27x/-27 = 0
x = 0
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3. [tex]-\frac{1}{2} z=\frac{5}{12}[/tex]
multiply both sides by the reciprocal of -1/2.
[tex]-\frac{1}{2} z(-2)=\frac{5}{12}(-2)[/tex]
z = [tex]-\frac{5}{6}[/tex]
hope this helps :)
