5. Hypatia wants to use the elimination method to solve the system of equations below. She thinks that a variable will be eliminated if she multiplies the first equation by-1 and then adds the equations together.
Is she correct? Explain your reasoning.
x + 2y = 8
y+x=5

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

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

it’s supposed to be -4+45=41

step-by-step explanation:

answer: my brother can figure it out, imma go get him so i can answer : ) edit: my brother is sleeping, sorry man

step-by-step explanation: