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Computers & Technology
18 February, 20:06
2x + 3y = 11
y = x-3
+4
Answers (
2
)
Sarahi Hood
18 February, 20:13
0
x=4 and y=1
Explanation:
Let's solve your system by substitution.
2x+3y=11; y=x-3
Rewrite equations:
y=x-3; 2x+3y=11
Step: Solve y=x-3 for y:
y=x-3
Step: Substitute x-3 for y in 2x+3y=11:
2x+3y=11
2x+3 (x-3) = 11
5x-9=11 (Simplify both sides of the equation)
5x-9+9=11+9 (Add 9 to both sides)
5x=20
5x/5=20/5
(Divide both sides by 5)
x=4
Step: Substitute 4 for x in y=x-3:
y=x-3
y=4-3
y=1 (Simplify both sides of the equation)
Answer:
x=4 and y=1
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Jacey Yang
18 February, 20:28
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2x+3y=11 y=x-3
2x+3 (x-3) = 11
2x+3x-9=11
5x=20/:5
x=4
y=x-3
y=4-3
y=1
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