wanderlustporvida
wanderlustporvida wanderlustporvida
  • 26-02-2017
  • Mathematics
contestada

How to solve this equation algebraically: Y=2x+1
3x+4y=26

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baabaagreysheep
baabaagreysheep baabaagreysheep
  • 26-02-2017
You can substitute what y is into the second equation, so:
3x + 4(2x + 1) = 26
3x + 8x + 4 = 26
11x + 4 = 26
- 4
11x = 22
÷ 11
x = 2

y = (2 × 2) + 1
y = 5 + 1
y = 5

So you get x as 2 and y as 5, I hope this helps!
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1+4=5 2+5=12 3+6=21 8+11=?