How to solve? I basically want to know the first step..

Mathematics

2 answers:

Ratling [72]3 years ago

8 0

In the equation x-y = 5 subtract x from both sides , and then divide by -y. so at the ned you will get what y equals to and plug that into your equation
2x-2y = 10.

Let me know if this is helpful :) <span />

inessss [21]3 years ago

5 0

You have to get x alone and then do the rest of the steps

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aleksklad [387]

Using proportions, it is found that the total volume of the glass is of 216 cm³.

<h3>What is the missing information?</h3>

The problem is incomplete, but researching it on a search engine, it is found that:

Initially, the glass is 1/3 full.

After adding 63 cm³ of orange of juice, the glass is 5/8 full.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.

Considering the volume of the glass as x, and the information given in the problem, the following equation can be built:

$\frac{x}{3} + 63 = \frac{5x}{8}$