tìm x biết:
x +3456 =5478
Số nào khác các số còn lại:
1011, 7879, 3456, 5478, 102103, 4546
so khac trong day so tren la102103
tai vi cac so con lai co bon chu so ma so102103 co 6 chu so
duyet nha
5478 x 9
Nhung cau nhu the nay ban nen tinh bang may tinh thi hon!
1111 x 3333 x 4562 x 6785 =
5478 x 7855 x 5743 x 7623 =
2/tính nhanh a)(45-3456)+3456 b)(77+22-75)-(-25-78-13) c)-25.63-25.37
3/Tìm x a)-5x-16=-46 b)(-80)-(-16-x)=20
3:
a: -5x-16=-46
=>-5x=-46+16=-30
=>5x=30
=>\(x=\dfrac{30}{5}=6\)
b: -80-(-16-x)=20
=>\(-x-16=-80-20=-100\)
=>x+16=100
=>x=100-16=84
2:
a: \(\left(45-3456\right)+3456\)
\(=45+3456-3456\)
=45
b: \(\left(77+22-75\right)-\left(-25-78-13\right)\)
\(=77+13+22+78-75+25\)
\(=90+100-50\)
=140
c: \(-25\cdot63-25\cdot37\)
\(=-25\left(63+37\right)\)
\(=-25\cdot100=-2500\)
1) 20,22 : 0,5 + 20,22 : 0,125
2) 3456 x 37 + 3456 x 19 + 3456 x 45 - 3456
1) 20,22 : 0,5 + 20,22 : 0,125
= 20,22 x 2 + 20,22 x 8
= 20,22 x (2 + 8)
= 20,22 x 10
= 202,2
2) 3456 x 37 + 3456 x 19 + 3456 x 45 - 3456
= 3456 x 37 + 3456 x 19 + 3456 x 45 - 3456 x 1
= 3456 x (37 + 19 + 45 - 1)
= 3456 x 100
= 345600
Tìm x biết:x/125=69/115. Tìm x ?
x:125=\(\frac{69}{115}\)
x=\(\frac{69}{115}\times125\)
x=75
Tìm x :
X x 3456 - X x 2556 + X = 27035
\(x\times3456-x\times2556+x=27035\)
\(x\times\left(3456-2556+1\right)=27035\)
\(x\times901=27035\)
\(x=27035:901\)
\(x=\dfrac{27035}{901}\)
#AvoidMe
\(x\times3456-x\times2556+x=27035\)
\(x\times\left(3456-2556+1\right)=27035\)
\(x\times901=27035\)
\(x=27035:901\)
\(x=\dfrac{27035}{901}\)
Tìm x,biết:
x*95+x+x:0,25=7963
`x xx 95 + x + x : 0,25 = 7963`
`x xx (95 + 1 + 4) = 7963`
`x xx 100 = 7963`
`=> x = 79,63`.
\(x\times\left(95+1+4\right)=7963\)
\(100\times x=7963\)
\(x=79,63\)
\(=>x\left(95+1+4\right)=7963\)
\(x=\dfrac{7963}{95+1+4}=\dfrac{7963}{100}=79,63\)
Tìm x ,biết:
x*95+x+x:0,25=102,34
`x xx95+x+x:0,25=102,34`
`x xx95+x+x xx4=102,34`
`x xx(95+1+4)=102,34`
`x xx100=102,34`
`x=102,34:100=1,0234`
`x xx 95 + x + x :0,25 = 102,34`
`x xx 95 + x + x xx 4 = 102,34`
`x xx ( 95+1+4)=102,34`
`x xx 100 = 102,34`
`x = 102,34 : 100`
`x = 1,0234`
`x xx95+x+x:0,25=102,34`
`x xx(95+1+4)=102,34`
`x xx100=102,34`
`x=102,34:100`
`x=1,0234`