carls6
1 Answer
chelleanne
8x + 5y = 5
3x + 3y = 9
Lets start with the second equation first and solve for x:
3x + 3y = 9
3x + 3y - 3y = 9 - 3y
3x = 9 - 3y
Divide by 3 to get x by itself.
3x/3 = 9/3 - 3y/3
x = 3 - y
Put x value in the first equation. > 8x + 5y = 5 and solve for y:
8(3 - y) + 5y = 5
24 - 8y + 5y = 5
24 - 3y = 5
24 - 24 - 3y = 5 - 24
-3y = -19
Divide by -3 to get y by itself.
-3y/-3 = -19/-3
y = 19/3
Put y value in the second equation > 3x + 3y = 9 and solve for x.
3x + 3(19/3) = 9
3x + 19 = 9
3x + 19 - 19 = 9 - 19
3x = -10
Divide by 3 to get x by itself.
3x/3 = -10/3
x = -10/3
Answer: x = -10/3 and y = 19/3
| 14 years ago. Rating: 0 | |
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