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4vir4ik [10]
3 years ago
8

I have problems Understanding systems Variable like this example

Mathematics
1 answer:
Anastaziya [24]3 years ago
7 0
<span><span><span><span>4x</span>−<span>2y</span></span>+z</span>=8
</span>Step 1: Add 2y to both sides        <span><span><span><span><span>4x</span>−<span>2y</span></span>+z</span>+<span>2y</span></span>=<span>8+<span>2y</span></span></span><span><span><span>4x</span>+z</span>=<span><span>2y</span>+8
</span></span>Step 2: Add -z to both sides         <span><span><span><span>4x</span>+z</span>+<span>−z</span></span>=<span><span><span>2y</span>+8</span>+<span>−z</span></span></span><span><span>4x</span>=<span><span><span>2y</span>−z</span>+8
</span></span>Step 3: Divide both sides by 4      <span><span><span>4x</span>4</span>=<span><span><span><span>2y</span>−z</span>+8</span>4</span></span><span>x
=<span><span><span><span>1/2</span>y</span>+<span><span><span>−1/</span>4</span>z</span></span>+<span>2

</span></span></span><span><span><span>−y</span>+z</span>=4
</span>Step 1: Add -z to both sides          <span><span><span><span>−y</span>+z</span>+<span>−z</span></span>=<span>4+<span>−z</span></span></span><span><span>−y</span>=<span><span>−z</span>+4
</span></span>Step 2: Divide both sides by -1     <span><span><span>−y</span><span>−1</span></span>=<span><span><span>−z</span>+4</span><span>−1</span></span></span><span>y

=<span>z−<span>4

</span></span></span><span><span>2z</span>=4
</span>Step 1: Divide both sides by 2  <span><span><span>2z/</span>2</span>=<span>4/2
</span></span><span>=z=2</span><span>
</span>
<span>

</span>
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