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Does anyone know to do Elimination?
STEP BY STEP ON HOW TO DO THIS ELIMINATION METHOD PLEASEE
y = 2.50 + 3x
y= 4 + 2.25x
thanksss
2 Answers
- MattLv 51 decade ago
y = 2.50 + 3x
y= 4 + 2.25x
subtract equation #2 from equation #1 to eliminate y
0 = -1.5 + .75x
.75x = 1.5
x = 2
substitute 2 for x in either equation to find y
y = 2.50 + 3(2)
y = 2.50 + 6
y = 8.50
- 1 decade ago
Multiply the bottom equation by 3 and the top by -2.25.
-2.25y=-5.625-6.75x
3y=12+6.75y
Add the equations together to cancel the ys out
.75y=6.375
divide by .75
Y=8.5
put the y back in to the original equation to solve for x.
