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LenaWriter [7]
3 years ago
14

9. Solve the equation. Check your solution, if possible. 1.5x + 1.3x = -8.4

Mathematics
2 answers:
Maksim231197 [3]3 years ago
6 0

Answer:

-3

Step-by-step explanation:

1.5x + 1.3x = -8.4

2.8x = -8.4

x=-3

NARA [144]3 years ago
5 0
<h2><u>Required Answer</u>:</h2>

As per the provided question, we have to find the value of x. So, we can easily find the value of x by transposition method.

\sf \red { 1.5x + 1.3x = -8.4 }

\sf  {\implies 2.8x = -8.4 }

\sf  {\implies x =\dfrac{ -8.4 }{2.8}}

\sf  {\implies x =\dfrac{ -84 \times \cancel{10} }{28 \times \cancel{10}}}

\sf  {\implies x =\dfrac{ -84 }{28}}

\sf  {\implies x = -3} \purple {\bigstar}

<h3>Let's check it too by verifying it! </h3>

<h2><u>Verification</u>:</h2>

Just substitute the value of x in L.H.S .

\sf \red { 1.5x + 1.3x = -8.4 }

Therefore

\sf  {\implies  1.5(-3) + 1.3(-3)= -8.4 }

\sf  {\implies  -4.5+ (-3.9)= -8.4 }

\sf  {\implies  -4.5-3.9= -8.4 }

\sf \purple {\implies  -8.4= -8.4 }

\sf {\therefore L.H.S= R.H.S }

<h2>So, done! </h2>
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