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2 years ago

Solve the system of linear equations by substitution. Check your solution.

Mathematics

1 answer:

bearhunter [10]2 years ago

8 0

1. X+2=3x-4
6=2x
x= 3

2. y= 8-x
8-x = 3x+4
4= 4x
X= 1

3. -2x +3(2x+7)=9
-2x + 6x + 21 = 9
4x = -12
x= -3

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