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shtirl [24]
3 years ago
6

Simplify the following expressions by combining like terms. Then, tell if the expressions are equivalent.

Mathematics
1 answer:
dezoksy [38]3 years ago
6 0

Answer:

<em>2+4r. Expressions are equivalent.</em>

Step-by-step explanation:

  • <em>3r + 10 + r -8 </em>

<em> Multiply r and 3 </em>

<em>Multiply r and 1 </em>

<em> The r just gets copied along. </em>

<em> The answer is r </em>

<em> r </em>

<em> 3*r evaluates to 3r </em>

<em> 3*r+10 evaluates to 3r+10 </em>

<em> 3r + r = 4r </em>

<em> The answer is 4r+10 </em>

<em> 3*r+10+r evaluates to 4r+10 </em>

<em> 10 - 8 = 2 </em>

<em> The answer is 2+4r </em>

<em> 3*r+10+r-8 evaluates to 2+4r </em>

<em> The final answer is </em>

<em>2+4r</em>

<em />

  • <em>8 + 2(2r) - 6 </em>

<em> Multiply r and 2 </em>

<em>Multiply r and 1 </em>

<em> The r just gets copied along. </em>

<em> The answer is r </em>

<em> r </em>

<em> 2*r evaluates to 2r </em>

<em> Multiply 2 and 2r </em>

<em> Multiply 1 and r </em>

<em> The r just gets copied along. </em>

<em> r </em>

<em> 2*(2*r) evaluates to 4r </em>

<em> 8+2*(2*r) evaluates to 8+4r </em>

<em> 8 - 6 = 2 </em>

<em> The answer is 2+4r </em>

<em> 8+2*(2*r)-6 evaluates to 2+4r </em>

<em> The final answer is </em>

<em>2+4r</em>

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