Question

Solve the following system of equation 3x-2y+7z=5
7x+y+9z=6
3x+3y-7z=0

Answer 1

Answer :

★Solution 1

= 3x-2y+7z=5

= 3x = 5 + 2y - 7z

• Multiplying both sides of the equation with 3

= x = $\dfrac{5}{3} + \dfrac{2}{3}y - \dfrac{7}{3}z$

★Solution 2

= 7x+y+9z=6

= 7x = 6 - y - 9z

• Multiplying both sides of the equation with 7

= x = $\dfrac{6}{7} - \dfrac{1}{7}y - \dfrac{9}{7}z$

★Solution 3

= 3x+3y-7z=0

= 3x = -3x + 7z

• Multiplying both sides of the equation with 3.

= x = $- y +\dfrac{7}{3} z$

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