999-x +500=124 x+134-160=308
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\(x-\left(-18\right)=134-\left(34-91\right)\)
⇔\(x+18=134-34+91\)
⇔\(x+18=191\)
⇔\(x=173\)
\(4x+\left(-188\right)=-358+\left(458-124\right)\)
⇔\(4x-188=-358+458-124\)
⇔\(4x-188=-24\)
⇔\(4x=164\)
⇔\(x=41\)
+) x-(-18) = 134 - (34-91)
<=> x +18 = 191
<=> x= 173
+) 4x+(-188) = -358 + (458 - 124)
<=> 4x =164
<=>x =41
a. 113 + 142 + x = 999 – 103
255 + x = 896
x = 896 – 255
x = 641
b. x – 124 = 400 + 56
x – 124 = 456
x = 456 + 124
x = 580
c. 963 – x = 869 – 28 : 4
963 – x = 869 – 7
963 – x = 862
x = 963 – 862
x = 101
\(134\div\left(x-3\right)=35+160\div5\)
\(134\div\left(x-3\right)=35+32\)
\(134\div\left(x-3\right)=67\)
\(x-3=134\div67\)
\(x-3=2\)
\(x=3+2\)
\(x=5\)
hok tốt
999-x+500-100=105
999-x+500=105+100
999-x+500=205
999-x=205-500
999-x=295
x=999-295
x=704
k mik mik k lai
a, 134: [x-3] = 35 + 160: 5
134 : [x-3] = 35 + 32
134 : [x-3] = 67
x - 3 = 134: 67
x-3 = 2
x = 2 + 3
x = 5
Bài b bạn ghi lại đề nha
a,134:(x-3)=35+160:5
=> 134:(x-3)=35+32
=> 134:(x-3)= 67
=> x - 3 = 134 : 67
=> x-3 = 2
=> x = 2 + 3 = 5
b,[(10-x).2]:3-2=3
=> [(10-x).2]:3 = 3+2
=> [(10-x).2]:3 = 5
=> (10 -x) . 2 = 5.3
=> (10 - x).2 = 15
=> 10-x = 15: 2
=> 10 - x =7,5
=> x = 10 - 7,5 = 2,5
1: \(=-24\left(45-5\right)=-24\cdot40=-960\)
2: \(=-134\left(1-51+48\right)=-134\cdot\left(-2\right)=268\)
3: \(=124\left(1-52+47\right)=124\cdot\left(-3\right)=-372\)
999 - x + 500 = 124
999 - x = 124 - 500
999 - x = -376
x = 999 + 376
x = 1375
x + 134 - 160 = 308
x + 134 = 308 + 160
x + 134 = 468
x = 468 - 134
x = 334
a) \(999-x+500=124\)
\(\Rightarrow999-x=124-500\)
\(\Rightarrow999-x=-376\)
\(\Rightarrow x=999-\left(-376\right)\)
\(\Rightarrow x=999+376\)
\(\Rightarrow x=1375\)
b) \(x+134-160=308\)
\(\Rightarrow x+134=308+160\)
\(\Rightarrow x+134=468\)
\(\Rightarrow x=468-134\)
\(\Rightarrow x=334\)