Colleen divided integer a by −2 and got 8. Then she divided 8 by integer b and got −4. Find the quotient of integer a and integer b. / = division
a/b =

9514 1404 393

  8

Step-by-step explanation:

The first division was ...

  a/-2 = 8

Multiplying by -2, we have ...

  a = (-2)(8) = -16

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The second division was ...

  8/b = -4

Multiplying by b/-4, we have ...

  8/-4 = b = -2

__

Then the quotient of interest is ...

  a/b = (-16)/(-2)

  a/b = 8

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18