tìm x
(x-101):123=456 (x-100):105=248
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x + 123 = 456 - 100
x + 123 = 356
x = 356 - 123
x = 233
x+123=456-100
x+123=356
x=356-123
x=233
\(456+123x=789\)
\(123x=789-456=333\)
\(x=333:123=\dfrac{111}{41}\)
x + 123 = 456
x = 456 - 123
x = 333
nếu mk đúng thì mk nhé ủng hộ mk nha mn kb mk đi
x + ( 123 + 456 ) - ( 23 + 56 ) = 789
x+579-79=789
x+579=789+79= 1568
x=1568-579=989
nhớ kick cho ình nha
Tìm x :
x + ( 123 + 456 ) - ( 23 + 56 ) = 789
x + 579 - 79 = 789
x + 579 = 789 + 79 = 868
x = 868 - 579
x = 289
a) \(58+7x=100\)
\(=>7x=100-58\)
\(=>7x=42\)
\(=>x=42:7\)
\(=>x=6\)
b) \(3x-7=28\)
\(=>3x=28+7\)
\(=>3x=35\)
\(=>x=35:3\)
\(=>x=\dfrac{35}{3}\)
c) \(x-56:4=16\)
\(=>x-14=16\)
\(=>x=16+14\)
\(=>x=30\)
d) \(101+\left(36-4x\right)=105\)
\(=>36-4x=105-101\)
\(=>36-4x=4\)
\(=>4x=36-4\)
\(=>4x=32\)
\(=>x=32:4\)
\(=>x=8\)
e) \(\left(x-12\right):12=12\)
\(=>x-12=12.12\)
\(=>x-12=144\)
\(=>x=144-12\)
\(=>x=132\)
f) \(\left(3x-2^4\right).7^3=2.7^4\)
\(=>3x-2^4=2.7^4:7^3\)
\(=>3x-16=2.7=14\)
\(=>3x=14+16\)
\(=>3x=30\)
\(=>x=30:3\)
\(=>x=10\)
i) \(\left(10+2x\right).4^{2011}=4^{2013}\)
\(=>10+2x=4^{2013}:4^{2011}\)
\(=>10+2x=4^2=16\)
\(=>2x=16-10\)
\(=>2x=6\)
\(=>x=6:2\)
\(=>x=3\)
\(#WendyDang\)
\(123\cdot456+456\cdot321-256\cdot444\)
\(=\left(123+321\right)\cdot456-256\cdot444\)
\(=444\cdot456-256\cdot444\)
\(=444\cdot\left(456-256\right)\)
\(=444\cdot200\)
\(=88800\)
\(101+\left(36-x\right)=105\)
\(\Rightarrow36-x=105-101\)
\(\Rightarrow36-x=4\)
\(\Rightarrow x=36-4\)
\(\Rightarrow x=32\)
Vậy: x = 32
101+(36-x)=105
36-x = 105-101
36-x = 4
x= 36 - 4
x = 32
Vậy x = 32
a) (x-101):123=456
x-101 =456x123
x-101 =56088
x =56088+101
x =56189
b) (x-100):105=248
x-100 =248x105
x-100 =26040
x =26040+100
x =26140
( x - 101 ) : 123 = 456
x - 101 = 456 x 123
x - 101 = 56088
x = 56088 + 101
x = 56189