Solve for y:
2x + 3y + 4z = 29
3x + y + 3z = 21
4x + 4y + 5z = 40
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Answer:
Y = 3
Step-by-step explanation:
2* (2x + 3y + 4z = 29)
4x + 6y + 8z = 58
4x+ 4y+5z = 40
sub = 0 + 2y + 3z = 18 ---->A
similarly multiply 2x + 3y +4z = 29 by 3 and 3x +y+3z = 21 by 2 to get equation in terms of Y and Z
Solve the above equation with A and you will get Y = 3
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