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15.6 = x

Step-by-step explanation:

(9x +82) = (12x +35)

subtract 35

(9x +82 - 35) = (12x +35 -35) =

(9x +47) = 12x

subtract 9x

(9x - 9x + 47) = 12x - 9x =

47 = 3x

divide by 3

47/3 = 3x/3

15.6 = x

step-by-step explanation:

your mom

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form