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Vincent Simon
Mathematics
6 December, 21:25
What is - 3x-5y=6
y=-3
+3
Answers (
1
)
Cherish Morris
6 December, 21:50
0
x = 3
Step-by-step explanation:
1) Substitute - 3 for y in the equation:
-3x - 5 (-3) = 6
2) Simplify, two negatives multiplied equals a positive.
-3x + 15 = 6
3) Solve for x, first subtract 15 from both sides
-3x - 15 + 15 = 6 - 15
-3x = - 9
4) Solve for x, divide both sides by - 3
-3x/-3 = - 9/-3
x = 3
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