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3 years ago

15

2x+4+x=8+2(3+x)-3 solve for x

2 answers:

LekaFEV [45]3 years ago

5 0

Answer:

<h2>x = 7</h2>

Step-by-step explanation:

$2x+4+x=8+2(3+x)-3\\\\\text{for}\ 2(3+x)\ \text{use the distributive property}:\ a(b+c)=ab+ac\\\\2(3+x)=(2)(3)+(2)(x)=6+x\\\\2x+4+x=8+6+2x-3\\\\\text{combine like terms}\\\\(2x+x)+4=2x+(8+6-3)\\\\3x+4=2x+11\qquad\text{subtract 4 from both sidesi}\\\\3x+4-4=2x+11-4\\\\3x=2x+7\qquad\text{subtract}\ 2x\ \text{from both sides}\\\\3x-2x=2x-2x+7\\\\x=7$

Marizza181 [45]3 years ago

4 0

Answer:x=7

Step-by-step explanation:

Use BODMAS

Open bracket first

2x+4+x=8+2(3+x)-3

2x+4+x=8+6+2x-3

2×+x-2x=8+6-3-4

×=7

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3 years ago

a store sells grass seed in small bags and large bags.the small bags have 7 pounds of seed for 27.93 and large bags cost 66.98.w

Nonamiya [84]

Answer

Find out the ratio of price to pound for each bag.

To prove

As given

A store sells grass seed in small bags and large bags.the small bags have 7 pounds of seed for $27.93 .

7 pound = $27.93

Now find out the cost for the 1 pound.

$1\ pound\ cost= \frac{27.93}{7}$

1 pound cost = $3.99

As given large bags cost $66.98.

Now find out pounds in the large bags.

Let us assume that the number of pounds in the large bags be x.

Than

3.99 × x = 66.98

$x = \frac{66.98}{3.99}$

x = 16.8 pounds (approx)

Now find out the ratio of price to pound for each bag.

As small bags weight = 7 pounds

Cost of the small bags = $27.93

$\frac{Price\ of\ small\ bag}{Cost\ of\ the\ small\ bags} = \frac{27.93}{7}$

As large bags weight = 16.8 pounds

Cost of the large bags = $66.98

$\frac{Price\ of\ large\ bag}{Cost\ of\ the\ large\ bags} = \frac{66.98}{16.8}$

Hence proved

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