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3 years ago

1/4(z+3z) + 7 = -z + 1 Distributive property algebra.

Mathematics

2 answers:

Gekata [30.6K]3 years ago

8 0

Answer:

z = -3

Step-by-step explanation:

There are four terms here. Multiply each by 4 to remove the fractional coefficient 1/4:

z + 3z + 28 = -4z + 4

Combining the z terms, all on the left sides, we get 8z + 28 = 4, which simplifies to 8z = -24. Then, dividing both sides by 8, we get z = -3 (answer)

Note:

We are using the Distributive Property of Multiplication here:

4(1/4)(z + 3z) + 4(7) = 4(-z + 1)

frutty [35]3 years ago

6 0

Answer:

45 is the answer

Step-by-step explanation:

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inn [45]

Answer:the present age of the father is 45 years

Step-by-step explanation:

Let x represent the present age of the father.

Let y represent the present age of the son.

Let z represent the age of the daughter.

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his daughter is 3 years younger than the son. It means that

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The sum of their ages 3 years ago was 63. This means that

x - 3 + y - 3 + z - 3 = 63

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solution

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