Solve the equation.
1. For parentheses:
Distribute
4-2(x+7) =
3(x+5)
2. If necessary:
Combine Terms
3. Apply properties:
Add Subtract
Multiply
Divide
4. To start over:
Reset the

Step-by-step explanation:

Distribute:

Simplify

Simplify each side by combining like terms

Add 10 to both sides

Subtract 3x from both sides

Divide both sides by -5

Done

1.6 hours per week is the difference in time spent online by teens in these (Pittsburgh and Miami/Ft. Lauderdale) cities.

Step-by-step explanation:

Given:

Teens in Pittsburgh aged 12-17 spend 15.8 hours per week online. Let take as,

                 P = 15.8 hours per week

Teens in Miami/Ft. Lauderdale spend 14.2 hours per week online. Let take this as,

               M = 14.2 hours per week

We need to find the difference in time spent online by teens in both cities. It means 'difference (d)'. Hence,

              Difference (d) = P - M

              Difference (d) = 15.8 - 14.2

              Difference (d) = 1.6 hours per week

1.6 hours per week is the difference in time spent online by teens in these cities (Pittsburgh and Miami/Ft. Lauderdale).