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4 years ago

9

What is the solution the the equation: 1 - z/5 = 9

2 answers:

vichka [17]4 years ago

8 0

Firstly we are going to s<span>implify both sides of this equation so:
</span><span>1−<span>z/5</span></span>=<span>9
</span>So lets simplify 1-z/5=9:
<span>1+<span><span><span>−1/</span>5</span>z</span></span>=<span>9
</span><span><span><span><span>−1/</span>5</span>z</span>+1</span>=<span>9
</span>Second we are going to s<span>ubtract 1 from both of the sides so:
</span><span><span><span><span><span>−1/</span>5</span>z</span>+1</span>−1</span>=<span>9−<span>1
</span></span><span><span><span>−1/</span>5</span>z</span>=<span>8
</span>Finally we are going to m<span>ultiply both of the sides by 5/(-1):
</span><span><span>(<span>5/<span>−1</span></span>)</span>*<span>(<span><span><span>−1/</span>5</span>z</span>)</span></span>=<span><span>(<span>5/<span>−1</span></span>)</span>*<span>(8<span>)
</span></span></span>And now your final answer shall be:
z=<span>−<span>40
</span></span>I hope this helps!

Bumek [7]4 years ago

6 0

Isolate Z from the equation:

Add z/5 to both sides
Subtract 9 from both sides

-8 = z/5

Multiply 5 to both sides

-40 = z

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