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\(123+123+12+23=281\)
\(12+34-2=44\)
K mình nha mình sẽ k bạn thề luôn!
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123 + 123 + 23 +12 = 281
12 x 4 =48
ai qua nhớ cho mk nha ^_-,cảm ơn cac bn nhìu
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\(A=\frac{5}{9}.\frac{7}{13}+\frac{5}{9}.\frac{6}{13}\)(( . là dấu nhân nha )
\(A=\frac{5}{9}.\left(\frac{7}{13}+\frac{6}{13}\right)\)
\(A=\frac{5}{9}\)
\(B=\left(\frac{1}{19}+\frac{12}{999}+\frac{123}{9999}\right).\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
Mà \(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}=0\)
\(\Rightarrow B=0\)
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1)
123 + x = 45 - 12
=> 123 + x = 33
=> x = 33 - 123
=> x = -90
Vậy x = -90
x + 654 = 23 x 5
=> x + 654 = 115
=> x = 115 - 654
=> x = -539
Vậy x = -539
Bài 1 : tìm x .
123 + x = 45 - 12
123 + x = 33
x = 33 - 123
x = -90
x + 65 = 23 * 5
x + 65 = 115
x = 115 - 65
x = 50
Bài cuối bn tự làm nha ! Mik bận rồi, xin lỗi {:(
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135<659
800>1/4
123<321
100=100
1/2=2/4
100/13>12/34
tk minh nha
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