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21-03-2016
Mathematics

Answered

use substitution to solve 3x+y=-3 y=x+5

Verified Answer :

21-03-2016

3x + y = -3
y = x + 5
- x + y = - x + x + 5
-x + y = 5
3x + y = -3
-x + y = 5
3x + y = -3
3 * (-x + y) = 5
3x + y = -3
-3x + 3y = 5
4y = 2
4y/4 = 2/4
y = 1/2

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