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Translate the sentence into an equation.

Three times the sum of a number and 5 is 7.

Use the variable C for the unknown number.

Translate the sentence into an equation.

Three times the sum of a number and 5 is 7.

Use the variable C for the unknown number.

Answer

5
(1 star)

1

Answer

5
(1 star)

1

MisterBrainly
11 months ago

2681 response - 0 helps
- Le the number be c

- Sum of a number and c means c+5
- 3times that means 3(c+5)

So

The expression is

- 3(c+5)=7

On solving

- 3c+15=7
- 3c=-8
- c=-8/3

Answer:3(C + 5) = 7

Step-by-step explanation:Let C = unknown number

The

sumof anumber and 5:C + 5

Three timesthe sum of a number and 5:3(C + 5)

Three times the sum of a number and 5

is 7:3(C + 5) = 7

To solveUse the distributive law: a(b + c) = ab + ac

⇒ 3C + 15 = 7

Subtract 15 from both sides:

⇒ 3C = -8

Divide both sides by 3:

⇒ C = -8/3