Angelica solves the system { x + y = -3.
x - y =1 } and finds the solution ( 1, 3 ). use substitution to explain whether angelica’s solution is correct.

the correct solution is (-1,-2), angelicas answer is incorrect, comment if something confuses you

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation:

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