What is the solution of 3x+y=9 and 3x minus 5y=15

its -15 instead of -45

y=-1

x= 10/3

Equation 1: 3x + y = 9

Equation 2: 3x - 5y = 15

Multiply -1 to equation 2 to cancel out x

-1(3x -5y = 15)

-3x + 5y = -15

Cancel out x

3x + y = 9

-3x + 5y = -15

6y = -6

y = -1

Substitute y with -1 to solve x

3x + (-1) = 9

3x - 1 = 9

    +1 = +1

3x = 10

3x/3 = 10/3

x = 10/3

i understand 100% 10/10 hit or miss?

step-by-step explanation:

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.