Jess spent 7x minutes on the computer. her sister spent 5 x + 10 minutes on the computer, which was the same amount of time jess spent. how many minutes was jess on the computer?

35 minutes

Step-by-step explanation:

Given : Jess spent 7x minutes on the computer.

Her sister spent 5 x + 10 minutes on the computer, which was the same amount of time Jess spent.

Thus , we have

Subtract 5x from both the sides , we get

Divide both sides by 2, we get

Now, the time spent by Jess = 7(5)=35 minutes

Hence, Jess was 35 minutes on computer.

4 adults and 12 babies

step-by-step explanation:

4 x 7 = 28

12 x 15 = 180

180 + 28 =208

4 x 3 = 12

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w