用加减消元法解方程组2x+3y=13x-2y=10时,有下列四种变形,正确的是(

题型:选择题

问题:

用加减消元法解方程组
2x+3y=1
3x-2y=10
时,有下列四种变形,正确的是(  )
A.
4x+6y=1
9x-6y=10
B.
6x+3y=3
6x-2y=20
C.
4x+6y=2
9x-6y=30
D.
6x+9y=3
6x-4y=10
考点:二元一次方程组的解法
题型:选择题

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