3y-5z=-23
4x+2y+3z=7
-2x-y-z=-3
2 answers:
Answer: x = 4, y = -6, z = 1
<u>Step-by-step explanation:</u>
EQ2: 4x + 2y + 3z = 7 → 1(4x + 2y + 3z = 7) → 4x + 2y + 3z = 7
EQ3: -2x - y - z = -3 → 2(-2x - y - z = -3) → <u>-4x -2y - 2z = -6</u>
z = 1
EQ1: 3y - 5z = -23
3y - 5(1) = -23
3y - 5 = -23
3y = - 18
y = -6
EQ3: -2x - y - z = -3
-2x - (-6) -(1) = -3
-2x + 6 - 1 = -3
-2x + 5 = -3
-2x = -8
x = 4
Hope it helps you(The pictures are where the answer is)
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