Question

What is the value of s?


`0.7(3s+4)-1.1s=7.9`

Enter the answer as a decimal in the box.

s =__

Answer 1

The value of s in the equation 0.7(3s+4)-1.1s=7.9 is calculated by first distributing the 0.7 across the parentheses, combining like terms, and then isolating s to get 5.1.

Step-by-step explanation:

To solve for the value of s in the equation 0.7(3s+4)-1.1s=7.9, we must first expand the equation and then combine like terms to isolate the variable s on one side of the equation. Doing so, we first distribute the 0.7 across the parentheses:

0.7 × 3s + 0.7 × 4 - 1.1s = 7.9
2.1s + 2.8 - 1.1s = 7.9

Next, we combine like terms:

2.1s - 1.1s + 2.8 = 7.9
1s + 2.8 = 7.9

Subtracting 2.8 from both sides gives us:

s = 7.9 - 2.8

s = 5.1

The value of s is 5.1, which can be entered into the box as the solution.

Answer 2

s = 5.1

First distribute:

2.1s + 2.8 - 1.1s = 7.9

Then combine like terms:

s + 2.8 = 7.9

Subtract 2.8 from both sides:

s + 2.8 +(-2.8) = 7.9 +(-2.8)

And finally your answer:

s = 5.1