12/7 simply exchange the denominator and the numerator

55 x 5 = 275 words

285 - 275 = 10

10 errors would be expected

**Answer:**

where is the options? or is any given.

**Step-by-step explanation:**

The soluition set is (-3,5) and a normal ordered pair reads (x,y). So that means 5 = [_]x-10

-Add 10 to both sides

15 = [_]x

-And we know the value of x so lets sub that in.

15 = [_](-3)

-And now we divide by -3

-5 = [_]

Next we have 3x-[_]y=-19

-Lets start this buy substituting values of x and y into the equation again.

3(-3)-[_](5)=-19

-Simplify

-9 - [_](5) = -19

-Move the (-9) by adding 9 to both sides

-[_](5) = -10

-divide by 5 = -2

-(1)[_] = -2

[_] = 2

-7(z - 6) = -70

-7z + 42 = -70

- 42 -42

-7z = -112

-7z/-7 = -112/-7

z = 16

**Answer: z = 16**