Question

Solve using substitution method 3x+5y=12 and 3x-5y+18=0 braunly.In

Answer 1

Answer:

x = -1 , y = 9/5 = 1.8

Step-by-step explanation:

3x+5y=12

3x-5y=-18

----------------

    6x = -6

Therefore, x = -1

Substituting x in the first formula

3(-1)+5y= 12

5y= 12- 3

5y = 9

y= 9/5 = 1.8

Therefore, y = 1.8