Toán Lớp 6: tìm số tự hiên x biết x+12+13=323
423-x =120+49
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Toán Lớp 6: tìm số tự hiên x biết x+12+13=323
423-x =120+49
Comments ( 2 )
x+25=323
x=323-25
x=298
423-x=169
x=423-169
x=254