Solve using substitution y = 4 and - 4x – 3y = 12 Give the answer as an ordered pair.

(-6,4)

Step-by-step explanation:

since (y) is already solved, you would substitute the y in the second equation so:

y=4 and -4x-3y=12

-4x-3(4)=12 ( Distribute )

-4x-12=12.

( add 12 to both sides to remove the constant )

-4x=24

( divide both sides by the coefficient so -4)

x=-6

now write it as an ordered pair (x,y): (-6,4)

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

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