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ambmundle ambmundle
  • 01-03-2017
  • Mathematics
Answered

how to use substitution for 4x+3y=13 and x+y=4

Verified Answer :

wolf1728
wolf1728 wolf1728
  • 03-03-2017

A) 4x + 3y = 13 
B) x + y = 4
B) x = 4 -y Then we substitute this into Equation A

A) 4 (4-y) + 3y = 13
A) 16 -4y +3y = 13
A) -y = -3
y = 3
x = 1

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