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goldenstorm765 goldenstorm765
  • 10-01-2017
  • Mathematics
Answered

1.solve the following system by substitution:


4x+y=24

y=-4x+24


2.solve the following system by substitution


y=2x+4

3x+y=9

Verified Answer :

familiaof5
familiaof5 familiaof5
  • 10-01-2017

4x+(-4x+24)=24 substitute in the value of y
0+24=24             simplify
0=-24+24
0=0
 3x+2x+4=9 substitute in the value of y
5x+4=9         simplify 
5x=-4+9
5x=5
x=1


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