Nếu 6x5=4 thì65x76= bao nhiêu
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\(x=\)\(\frac{-30}{11}nha\)\(bạn\)\(!!!!!!!!\)
\(tk\)\(mik\)\(nha\)\(!!!!!!!!!!!!!\)
(6x5:X)+15=4
30:X=4-15=-11
=>X=30:(-11)=-\(\frac{30}{11}\)
hihi, chúc bn hk tốt nha >,<
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=(30+7-37)x(1+2+3+4+5+6+7+8+9+10)
=(37-37)x(1+2+3+4+5+6+7+8+9+10)
=0x(1+2+3+4+5+6+7+8+9+10)
=0
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126 x 56 + 94
= (12 x 5)6 + 94
= 606 + 94
= 46656000000 + 6561
=46656006561
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a, 25 \(\times\)66 + 33 \(\times\) 25 + 25
= 25 \(\times\) 66 + 33 \(\times\) 25 + 25 \(\times\)1
= 25 \(\times\) ( 66 + 33 + 1)
= 25 \(\times\) ( 66 + 34)
= 25\(\times\) 100
2500
\(\dfrac{2}{3}\) \(\times\) \(\dfrac{9}{7}\) + \(\dfrac{4}{6}\) \(\times\) \(\dfrac{5}{7}\) - \(\dfrac{2}{3}\)
= \(\dfrac{2}{3}\) \(\times\) \(\dfrac{9}{7}\) + \(\dfrac{2}{3}\) \(\times\) \(\dfrac{5}{7}\) - \(\dfrac{2}{3}\) \(\times\) 1
= \(\dfrac{2}{3}\) \(\times\) ( \(\dfrac{9}{7}\) + \(\dfrac{5}{7}\) - 1)
= \(\dfrac{2}{3}\) \(\times\) ( 2 - 1)
= \(\dfrac{2}{3}\) \(\times\) 1
= \(\dfrac{2}{3}\)
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thực hiện phép tính bằng cách hợp lí (nếu có thể)
a,136:{[(468+332):160-5]+68}+2014
= 136 : { [ ( 468 + 332 ) : 160 - 5 ] + 68 } + 2014
= 136 : { [ 800 : 160 - 5 ] + 68 } + 2014
= 136 : { [ 5 - 5 ] + 68 } + 2014
= 136 : { 0 + 68 } + 2014
= 136 : 68 + 2014
= 2 + 2014
= 2016
\(136:\left\{\left[\left(468+332\right):160-5\right]+68\right\}+2014\)
\(=136:\left[\left(800:160-5\right)+68\right]+2014\)
\(=136:\left[\left(5-5\right)+68\right]+2014\)
\(=136:\left(0+68\right)+2014\)
\(=136:68+2014=2+2014\)
\(=2016\)