Tìm x :
x + 86 = 144
2 điểm) Tìm x :
a) x + 86 = 144
b) 570 : x = 5
a) x + 86 = 144
x = 144 – 86
x = 58
b) 570 : x = 5
x = 570 : 5
x = 144
a, X + 86 =144
b, 5x X= 375
a, X+86=144 b, 5x X =375
X=144-86 X=375:5
X= 58 X=75
a, X+86=144 b, 5x X=375
X=144-86 X=375:5
X=58 X=75
a> ta có : X + 86 = 114
X = 114 - 86
X = 28
b > 5 × X = 375
X = 375 : 5
X = 75
# chúc bạn học tốt ạ #
Tìm x
a) 86 - (86 + x) = 10
b) 10 - x = 7 - (-8)
c) (-24 + x) -43 = 15
\(a,86-\left(86+x\right)=10\\ \Rightarrow86+x=76\\ \Rightarrow x=10\\ b,10-x=7-\left(-8\right)\\ \Rightarrow10-x=15\\ \Rightarrow x=-5\\ c,\left(-24+x\right)-43=15\\ \Rightarrow x-24=58\\ \Rightarrow x=82\)
Tìm x biết:
a 86-x>86-4
b x=28<28+3
a) 86 - x < 86 - 4
86 - x < 82
x < 86 - 82
x < 4
b) hình như đề bài sai hay sao á
Tìm x :
X x 56 - X x 46 = 375 x 86
\(\Rightarrow x\times\left(56-46\right)=32250\\ \Rightarrow x\times10=32250\\ \Rightarrow x=3225\)
\(x\times56-x\times46=375\times86\\ \Rightarrow x\times\left(56-46\right)=32250\\ \Rightarrow x\times10=32250\\ \Rightarrow x=3225\)
\(x\times56-x\times46=375\times86\)
\(x\times\left(56-46\right)=32250\)
\(x\times10=32250\)
\(x=3225\)
Tìm x:
a) X : 6 = 144
b) 5 x X = 375
a) X : 6 = 144
X = 144 * 6
X = 864
b ) 5 * X = 375
X = 375 : 5
X = 75
$ HT & ^_6
Tìm x. 605+x=86×11. 45:x+32:x-57:x=4 .
a. 605 + x= 946
<=> x= 341
b. (45+32-57):x =4
<=> 20: x =4
<=> x=5
68 + x = 68 x 11 45: x + 32 : x - 57 : x = 4
68 + x = 748 ( 45 + 32 - 57 ) ; x = 4
x =748 - 68 20 : x = 4
x = 680 x = 20 : 4
x = 5
Bạn tham khảo nhé!
Tìm x biết: -91/9 ≤ x ≤ -432/144
\(\Leftrightarrow-10\dfrac{1}{9}< =x< =-3\)
hay \(x\in\left\{-10;-9;-8;...;-4;-3\right\}\)
tìm x :
2^x+2^x+3=144
2x + 3 + 2x = 144
<=> 2x (2^3 + 1) = 144
<=> 2x . 9 = 144
<=> 2x = 16
<=> x = 4
2^x + 2^x+3 = 144
2^x + 2^x . 2^3 = 144
2^x ( 2^3 + 1 ) = 144
2^x ( 8 + 1 ) = 144
2^x . 9 = 144
2^x = 144 : 9
2^x = 16
2^x = 2^4
=> x = 4
\(2^x+2^x+3=144\)
\(\Rightarrow2.2^x=144-3=141\)
\(\Rightarrow2^x=\frac{141}{2}=70,5\)
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