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3 years ago

Which expression is equivalent to 2(x + 7) - 18x+ 4/5 ?

Mathematics

1 answer:

Serjik [45]3 years ago

3 0

Answer:

-16x + 14 4/5

Step-by-step explanation:

Perform the indicated multiplication. We get:

2x + 14 - 18x + 4/5

Next, combine like terms: We get:

-16x + 14 4/5

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What is the elimination to this solution i think its b

Blababa [14]

EXPLANATION:

To get the solution of the simultaneous equation, using the elimination method:

We will have the following steps:

Step 1:

Write the two equations:

$\begin{gathered} y=-\frac{1}{2}x+3 \\ y=-\frac{7}{2}x-3 \end{gathered}$

Step2: Subtract the two equations:

$\begin{gathered} y-y=-\frac{1}{2}x-(-\frac{7}{2}x)+3-(-3) \\ 0=-\frac{1}{2}x+\frac{7}{2}x+6 \\ \end{gathered}$

Step 3: Simplify the expression

$\begin{gathered} 0=3x+6 \\ 3x=-6 \\ x=-\frac{6}{3} \\ x=-2 \end{gathered}$

Step 4: Substitute x=-2 into the formula:

$\begin{gathered} y=-\frac{1}{2}x+3 \\ y=-\frac{1}{2}\times-2+3 \\ y=1+3 \\ y=4 \end{gathered}$

Therefore, the answer is

$(-2,4)$

Thus,

Option B is correct

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1 year ago

Pls help, with explanation if possible

kirza4 [7]

king jon un

Step-by-step explanation:

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2 years ago