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valkas [14]
3 years ago
14

2. 2x - y = 6, - x + y = -1

Mathematics
2 answers:
cluponka [151]3 years ago
5 0

Answer:

y=3.166     x=4.166

Step-by-step explanation:

allochka39001 [22]3 years ago
3 0

Answer:

x = 5

y = 4

Step-by-step explanation:

just substitute the value of one variable into the other

-x +y = -1

or y = -1 +x   <-------- (i just added x to the right side)

now u know what y is equal to, just substitute that value into the first equation

2x - (-1+x) = 6     <-------- instead of y, i put the value of y from the 2 equation

NOW SOLVE FOR X!

2x +1 -x = 6

x + 1 = 6

x = 5

now solve for y since you have the value of x

y = -1 + x

or y = -1 + 5

y = 4

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What value of x makes the equation shown true? Show or explain what you did to get your answer. 5x – 1 = 19
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