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52 = 37
7 = 5 + 2
3 = 5 - 2
41 = 4 + 1 = 5
4 - 1 = 3
35 = 28
5 + 3= 8
5 - 3 = 2
25 = x
2+ 5 = 7
5 - 2 = 3
x = 37
[(4x+28).3+35]:5=35
(4x + 28 ).3+ 35 =35 . 5
(4x +28 ) .3 + 35 = 175
(4x +28 ) .3 = 175 -35
(4x + 28 ) .3 = 140
4x + 28 = 140 : 3
4x + 28 = 140/3
4x =140/3 - 28
4x = 56/3
x = 56/3 : 4
x = 14/3
Vậy x bằng 14/3
[ { 4 x X + 28 } x 3 + 55 ] : 5 = 35
[ { 4 x X + 28 } x 3 + 55 ] = 35 x 5
[ { 4 x X + 28 } x 3 + 55 ] = 175
{ 4 x X + 28 } x 3 = 175 - 55
{ 4 x X + 28 } x 3 = 120
4 x X + 28 = 120 : 3
4 x X + 28 = 40
4 x X = 40 - 28
4 x X = 12
X = 12 : 4
X = 3
(4*X+28)*3+55=35*5
=>(4*X+28)*3+55=175
=>(4*X+28)*3=120
=>4*X+28=40
=>4*X=12
=>X=3
\(37\times46+37\times51+111\)
\(=37\times46+37\times51+37\times3\)
\(=37\times\left(46+51+3\right)\)
\(=37\times100\)
\(=3700\)
------------
\(172\times47+86\times8-34\times4\)
\(=172\times47+172\times4-34\times4\)
\(=172\times\left(47+4\right)-34\times4\)
\(=172\times51-34\times4\)
\(=172\times3\times17-17\times2\times4\)
\(=17\times\left(172\times3-2\times4\right)\)
\(=17\times\left(516-8\right)\)
\(=17\times508\)
\(=8636\)
------------
\(35\times215-35\times200-175\)
\(=35\times215-35\times200-35\times5\)
\(=35\times\left(215-200-5\right)\)
\(=35\times10\)
\(=350\)
------------
\(48\times56+28\times104\)
\(=48\times2\times28+28\times104\)
\(=28\times\left(48\times2+104\right)\)
\(=28\times200\)
\(=5600\)
(4*x+28)*(3+55) :5=35
(4*x+28)*58 =35.5
(4*x+28)*58= 175
4*x+28=\(\frac{175}{58}\)
4 * x = \(\frac{175}{58}-28\)
4 * x = \(\frac{-1449}{58}\)
x = \(\frac{-1449}{58}:4=\frac{-1449}{232}\)
{ ( 4 . x + 28 ) . 3 + 55 } = 35 . 5
{ ( 4 . x + 28 ) . 3 + 55 } = 175
{ ( 4 . x + 28 ) . 3 } = 175 - 55
{ ( 4 . x + 28 ) . 3 } = 120
{ ( 4 . x + 28 ) } = 120 : 3
4 . x + 28 = 40
4 . x = 40 - 28
4 . x = 12
x = 12 : 4
x = 3
(\(x-35\)) : 7 = 28
(\(x-35\)) = 28 \(\times\) 7
\(x-35\) = 196
\(x\) = 196 + 35
\(x\) = 231