A.x+y=2xy | B.6x2-5x2=1 |
C.4ab+3ab=7a2b2 | D.2m2n-m2n=m2n |
A.6a-2(3a-2b-c)=6a-6a+c |
B.(7x-3y)-3(a2-b)=7x-3y-3a2-3b |
C.a-(-b-c+d)=a+b+c-d |
D.(-a+1)+(-b-c)=a+1-b-c |
A.3x+3y=6xy | B.7x-5x=2x |
C.16y2-7y2=9 | D.19a2b-9ab2=10a2b |
A.5 | B.-1 | C.1 | D.-5 |
A.a2-3a2=-2a2 | B.3a-a=2 |
C.3a+b=3ab | D.a+3a=3a2 |
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