3 years ago

Solve using elimination x+y=7 x-y=-3

Mathematics

2 answers:

yulyashka [42]3 years ago

5 0

Answer:

I think it's 4

Step-by-step explanation:

if x+y is 7 and x-y is 3 then the answer is 4

oksian1 [2.3K]3 years ago

5 0

Answer:

X=2, y=5

Step-by-step explanation:

X+y=7

x-Y=-3

————-

2x+ 0 =4

2x=4

x=2

solve for y using either equation

x+y=7

2+y=7

y=5

check answers by substituting x and y value in either equation:

x+y=7

2+5=7

7=7

x-y=-3

2-5=-3

-3=-3

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