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Travka [436]
1 year ago
7

Y = x - 4 2x + y = 5 solve for x and y

Mathematics
2 answers:
likoan [24]1 year ago
6 0

Answer:

X = 2

Y = 1

Step-by-step explanation:

STALIN [3.7K]1 year ago
5 0

Solve by substitution

y = x - 4 \\ 2x + y = 5 \\  \\ y = x - 4 \\ 2x - 5 =  - y \\  \\ y = x - 4 \\  - y = 2x - 5 \\  \\ add \: the \: two \: equations \\  \\ 0 = 3x - 9 \\ 9 = 3x \\  \frac{9}{3}  =  \frac{3x}{x}  \\ x =3 \\  \\ substitute \: 3 \: for \: x \: in \: one \: of \: the \: equations \: to \: find \: y \\  \\ y = x - 4 \\ y = 3 - 4 \\ y =  - 1 \\  \\ solution \: (3. - 1)

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