Math

3x+5z=77 4x+2z=56

Asked by AnneS2 on 24 Apr 03:49

Last updated by anonymous on 26 Apr 00:57

1 Answers

Log in to answer

Answered by CherieS on 26 Apr 00:57

4x+2z=56

4x+2z-2z=56-2z

4x=56-2z

4x/4=56-2z/4

x=14-1/2z

3x+5z=77

3(14-1/2z)+5z=77

42-1.5z+5z=77

42+3.5z=77

42-42+3.5z=77-42

3.5z=35

3.5z/3.5=35/3.5

z=10

x=14-1/2z

x=14-.5(10)

x=14-5

x=9