x | 3 |
x | 3 |
y | 2 |
1 |
5 |
y | 2 |
a | 2 |
b | 2 |
a | 2 |
b | 2 |
1 |
5 |
1 |
5 |
4 |
5 |
A.-2(3x-1)=-6x-1 | B.-2(3x-1)=-6x+1 |
C.-2(3x-1)=-6x-2 | D.-2(3x-1)=-6x+2 |
x | 地&nb六p; |
x | 地&nb六p; |
a | 地&nb六p; |
b | 地&nb六p; |
b | 地&nb六p; |
y | 2 |
A.3x+3y=6xy | B.2m2n-m2n=m2n |
C.4+5ab=9ab | D.7x2-5x2=2 |
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