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Ivanshal [37]
3 years ago
12

How do you do a 3-step algebra equation?

Mathematics
1 answer:
Vlad1618 [11]3 years ago
5 0
The goal of all algebra equations is to isolate the variable. In 3 step you should first make sure both variables are on the same side. To do that make sure you use the inverse.
For example:
6a + 9 = 3a + 15
because 3a is positive you're going to want to subtract it.
6a + 6 = 3a + 15
-3a         -3a
_______________
3a + 6 = 15

Now it's a 2 step equation and you solve it on from there.
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Answer:D

Step-by-step explanation:

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Why is it preferable to measure a penny in millimeters?
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PLEASE HELP, LAST THING I NEED TO GRADUATE
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8 0
3 years ago
In A certain chemical, the ratio of zinc to copper is 3 to 19. A jar of the chemical contains 836 grams of copper. How many gram
Elis [28]

Answer:

The jar contains 132 grams of zinc

Step-by-step explanation:

zinc to copper = 3 : 19

New equivalent weights

zinc to copper = x : 836

Now, let us solve for x as follows

\frac{zinc}{copper}  = \frac{3}{19} = \frac{x}{836} \\\\cross-multiplying\\3 \times\ 836 = 19 \times\ x\\2508 = 19x\\x = \frac{2508}{19}\\x =  132

the jar contains 132 grams of zinc

To check if the answer is accurate, the answer gotten when the weight of zinc is divided by copper will be the same for both the old and new ratios:

old ratio: 3 ÷ 19 =  0.158

new ratio: 132 ÷ 836 = 0.158

3 0
2 years ago
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