Eighteen increased by the product of three times a number w is 30. Find the number.

w=4

Step-by-step explanation:

18+3w=30

3w=30-18

3w=12

w=4

4

Step-by-step explanation:

First, you have to right out the equation, which is

3n + 18 = 30

To solve the equation, subtract 18 from both sides,

3n = 12

Then, divide both sides by 3

n = 4

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the forst and 3rd

step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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