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Orlov [11]
3 years ago
13

An equation is shown below:

Mathematics
2 answers:
Sphinxa [80]3 years ago
4 0
Multiple 6 with numbers inside paranthesis:
12x - 66 + 15 = 21
add 66 fhen substrack 15 from both sides :
12x = 72 divide both sides with 12:
x = 6

Elenna [48]3 years ago
4 0


Step 1: Simplify both sides of the equation.<span><span><span>6<span>(<span><span>2x</span>−11</span>)</span></span>+15</span>=21</span><span><span><span><span><span>
(6)</span><span>(<span>2x</span>)</span></span>+<span><span>(6)</span><span>(<span>−11</span>)</span></span></span>+15</span>=21</span>(Distribute)<span><span><span><span><span>
12x</span>+</span>−66</span>+15</span>=21</span><span><span><span>
(<span>12x</span>)</span>+<span>(<span><span>−66</span>+15</span>)</span></span>=21</span>(Combine Like Terms)<span><span><span>
12x</span>+<span>−51</span></span>=21</span><span><span><span>
12x</span>−51</span>=<span>21

</span></span>Step 2: Add 51 to both sides.<span><span><span><span>
12x</span>−51</span>+51</span>=<span>21+51</span></span><span><span>
12x</span>=<span>72

S</span></span>tep 3: Divide both sides by 12.<span><span><span>12x/</span>12 </span>= <span>72/<span>12

</span></span></span>x=<span>6
</span>
Therefore, the answer is 6

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