`B = 70 . ((121212)/(565656) + (121212)/(727272) ) + 121212 + 909090`
`B = 70 . (3/(14) + 1/6) + 121212 + 909090`
`B = 70 . 8/(21) + 121212 + 909090`
`B = (80)/3 + 121212 + 909090`
`B ~~ 1030328,667`
70(121212/565656+121212/727272+121212/909090)
Tính:\(C=70.\left(\frac{121212}{565656}+\frac{121212}{727272}+\frac{121212}{909090}\right)\)
tính tổng
A = 70 .[ 121212/565656 + 121212/727272 + 121212/909090
B = 191/210 + 161/240 +129/272 + 95/306
Tính nhanh
210.(111111/121212 +111111/202020+11111/303030 + 111111/424242 +111111/565656 +111111/727272 +111111/909090)
B=70.(131313/565656+131313/727272+131313/909090)
70.(131313/565656+131313/727272+131313/909090)
70.\(\left(\dfrac{131313}{565656}+\dfrac{131313}{727272}+\dfrac{131313}{909090}\right)\)
B= 70.( 131313/565656 + 131313/727272 + 131313/909090)
Tính B: Có cách làm !
B = 70.(\(\frac{131313}{565656}+\frac{131313}{727272}+\frac{131313}{909090}\))
ai Đúng tk
tính
\(70\left(\frac{252525}{565656}+\frac{252525}{727272}+\frac{252525}{909090}\right)\)
