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Solve the substitution 4x-3y=5 Y=2x-3
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4 votes
Solve the substitution 4x-3y=5
Y=2x-3

User Andrzej Budzanowski
by
8.2k points

1 Answer

6 votes
4x - 3y = 5
y = 2x - 3

4x - 3(2x - 3) = 5
4x - 3(2x) - 3(-3) = 5
4x - 6x + 9 = 5
-2x + 9 = 5
- 9 - 9
-2x = -4
-2 -2
x = 2
y = 2x - 3
y = 2(2) - 3
y = 4 - 3
y = 1
(x, y) = (2, 1)
User Mrinal Bhattacharjee
by
8.7k points
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