Toán Lớp 6: Giup : tìm y
a,4.(y+9) – 5 = 55
b,7.(y+25)-20=190
c, 6.(y x 8 ) + 40 =100
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Toán Lớp 6: Giup : tìm y
a,4.(y+9) – 5 = 55
b,7.(y+25)-20=190
c, 6.(y x 8 ) + 40 =100
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