Adiver went 25.65 feet below the surface of the ocean and then 16.5 feet further down he then rose 12.45 feet write and solve an expression to find the diver's new depth

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

answer: i realy don't get it that much can you me figer it out pleas you

step-by-step explanation: