X+Y=3 3x-2y=0 D=?
A) -5B)5C)-1D)+1
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Answer:
x+y=3; 2x+2y=6 multiply x+y=3 by 2 both sides;
2x+2y=6 (1)
3x-2y=0 (2)
5x+0=6 adding (1)&(2)
5x=6
x=6/5 put x=6/5 in x+y=3
6/5+y=3
y=3-6/5=(3×5-6)/5
Step-by-step explanation:
=(15-6)/5=9/5
x=6/5;y=9/5
check: x+y=3
6/5+9/5=(6+9)/5=15/5=3✓
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