Solve the following system of equations using substitution.

5y = x - 15

-3y = -12x - 9

What is the value of x?

(Enter as a fraction)

x - 15 = 5y

x = 5y + 15

-3y = -12(5y + 15)

-3y = -60y - 180

57y = 180

y = 60/19= 3 3/19

x = 5(60/19) + 15

x = 300/19 + 15

x = 300/19 + 285/19

x = 585/19= 30 15/19

Step-by-step explanation:

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step-by-step explanation:

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?