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Inessa [10]
4 years ago
8

Can yoy please help me solve these 3 problems???!!

Mathematics
2 answers:
eduard4 years ago
6 0

the 1st ne is 5x - 7 = 8

x= 3

the last im not sure

Alchen [17]4 years ago
5 0

<em>Answer,</em>

<em>Slide 1:</em><em> 8x − 7 = 3x + 8</em>

<em>Slide 2:</em><em> x = 3</em>

<em>Slide 3:</em><em> Not sure, but I'm still working on it :-)</em>

<em>Explanation,</em>

<em><u>Slide 1:</u></em>

<em><u>Simplify both sides of the equation.</u></em>

<em>6x + x + x − 5 − 2 = 8 + 2x + x</em>

<em>6x + x + x + −5 + −2 = 8 + 2x + x</em>

<em>(</em><em>6x</em><em> + </em><em>x</em><em> + </em><em>x</em><em>) + (</em><em><u>−5</u></em><em> + </em><em><u>−2</u></em><em>) = (</em><em>2x</em><em> + </em><em>x</em><em>) + (</em><em><u>8</u></em><em>) (Combine Like Terms)</em>

<em>8x</em><em> + </em><em><u>−7</u></em><em> = </em><em>3x</em><em> +</em><em><u> 8</u></em>

<em><u>8x − 7  = 3x + 8</u></em>


<em><u>Slide 2,</u></em>

<em>(Take the equation from above & contiue the work)</em>

<em><u>Subtract </u></em><em><u>3x</u></em><em><u> from both sides.</u></em>

<em>8x − 7 − 3x = 3x + 8 − 3x </em>

<em>5x − 7 = 8</em>

<em><u>Add</u></em><em><u> 7</u></em><em><u> to both sides.</u></em>

<em>5x − 7 + 7 = 8 + 7</em>

<em>5 x = 15</em>

<em><u>Divide both sides by</u></em><em><u> 5</u></em><em><u>.</u></em>

<em>5x/5 = 15/5</em>

<em>X = 3</em>


<u><em>Hope This Helps :-)</em></u>




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