Write the equation in standard from. y-4=2.5 (x+3)

Standard from is Ax+By=C Where A, B and C are all integers, A isnt negative and A and B cant be both zero

y-4=2.5 (x+3)

y-4=2.5x+7.5

y=2.5x+3.5

-2.5x+y=3.5

change decimals to fractions

-5/2x+y=7/2

Divide everything by 2 to get rid of the rational numbers and make them integers

-5x+3y=7

times everything by - 1 so A isnt negative

5x-3y=-7