A)d÷30=200-80 b)140-x=630÷7 b)6×c=420+120 Q)320÷a=72÷36
A )d÷30=200-80 d÷30=120 d=120×30 d=3600 b )140-x=630÷7 140-x=90 x=140-90 x=50 b )6×c=420+120 6×c=540 c=540÷6 c=90 Q )320÷a=72÷36 320÷a=2 a=320÷2 a=160