Asoccer match was held between peru and bolivia with 38,000 in attendance

The number of adult tickets sold was 22,375 and the  number of children's ticket sold was 15,625

Step-by-step explanation:

The complete question is

A soccer match was held between Peru and Bolivia with 38,000 in attendance. Adult tickets sold for $8 and children’s tickets sold for $5. Total sales were $257,125. How many of each type of ticket was sold?

Let

x ----> number of adult tickets sold

y ----> number of children's ticket sold

we know that

-----> equation A

-----> equation B

Solve the system by graphing

The solution is the intersection point both graphs

using a graphing tool

The solution is the point (22,375,15,625)

see the attached figure

therefore

The number of adult tickets sold was 22,375 and the  number of children's ticket sold was 15,625

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

could you provide figure.