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Solve each system using substitution.

1. 4x= 3y-2 ; 18= 3x+y

2. 3x+2y= 23 ; 1/2x-4= y

Sagot :

1. 4x= 3(18-3x) - 2
4x=54-9x-2
4x+9x=52
13x=52
x=4

substitute 4 for x
4(4)=3y-2
16=3y-2
16 + 2 = 3y
y=6

So your x would be 4 and y would be 6

to check your solution substitute x and y
4(4)=3(6) - 2
16 = 16 
Therefore that's the final answer for number 1. 
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