Gokuporter
  • Gokuporter
http://prntscr.com/9asoid
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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IrishBoy123
  • IrishBoy123
|dw:1449358069593:dw|
Gokuporter
  • Gokuporter
When are you going to stop typing? Are you writing an essay or something? @Brrandyn
Brrandyn
  • Brrandyn
Solve for one variable in an equation and thereafter, substitute in the other. For instance, let us solve for x in the given system. \[\large\ 5x-3y=-9\] Isolate the x to the other side of the equation. \[\large\ -3y=-5x-9\]Divide -3 accordingly. \[\large\ y=5/3x -3\] Substitute y into the 2nd equation. \[\large\ 2x-5y=4\]\[\large\ 2x-5(5/3x−3)=4\] Distribute & solve for x. \[\large\ x= ?\] \[[\large\ ?, y]\]

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Gokuporter
  • Gokuporter
x=2?
Brrandyn
  • Brrandyn
**Correction:\[\large\ y=5/3x+3\]
Brrandyn
  • Brrandyn
\[ \large\ 2x−5(5/3x+3)=4\]
Gokuporter
  • Gokuporter
How do you solve that?
Brrandyn
  • Brrandyn
To make it easier, convert the coefficient of the parenthesis (5) into a fraction. Multiply the fractions. After, distribute the -5 with 3 and solve using basic algebra. \[\large\ -5=-15/3\]
Brrandyn
  • Brrandyn
\[\large\ 2x - ((15/3x * 5/3x) -15))=4\]
Brrandyn
  • Brrandyn
\[\large\ 2x -25x -15 = 4\] \[\large\ x=?\]
Brrandyn
  • Brrandyn
Apply the same concept with y to solve for the solution of the system.
Gokuporter
  • Gokuporter
-0.8260869565
Gokuporter
  • Gokuporter
x=-38?
Gokuporter
  • Gokuporter
@IrishBoy123 is it (3,2)?

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