SOLUTION: three times the first number decreased by a second number is 4. the first number is increased by 4 times the second equals 23

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Question 1021996: three times the first number decreased by a second number is 4. the first number is increased by 4 times the second equals 23
Answer by Herdaysoji(25) About Me  (Show Source):
You can put this solution on YOUR website!
3x-y=4 equ 1
x+4y=23 equ 2
1* 3x-y=4
3* -3x-12y=-69
-13y=-65
y=5
sub y in equ1
3x-5=4
3x=5+4=9
x=9/3
x=3