Substiution method: y + 9 = 1/5x and
45 - 3y = -15x

Please show work thank you very much.

Question

Mathematics

Answered

Substiution method: y + 9 = 1/5x and
45 - 3y = -15x

Please show work thank you very much.

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Ainulkarimid Ainulkarimid · Answer 1

y+9=1/5x menjadi y= 1/5x -9
sesudah ini sibtusika n dalam persamaan 4x - 5y = -15x
4x -5(1/5x-9)= -15 x
4x + x+45=-15x
5x +45 = -15x 45=-20x
x=-45/20
x= -9/4

y+9 =1/5x
y = 1/5(-9/4)-9
y = -189/20
(-9/4,-189/20)