Combine like terms to simplify the expression: 7 − x − 4

3 + (-x) or -x + 3 they are the same just different ways to write them.

Step-by-step explanation:

7 - 4 = 3

there is only one variable so -x stays the same.

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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.

hope it