88-3x(7+x )=64
131x x- 941=128x8
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a)131.x-941=32
131x=32+941=973
x=973:131
=973/131
b.88-(7+x).3=64
(7+x).3=88-64=24
7+x=24:3=8
x=8-7
x=1
c)51+(26-3x):5=55
(26-3x):5=55-51=4
26-3x=4.5=20
2x=26-20=6
x=6:3=2
a) 131 . x - 941 = 32
131 . x = 32 + 941
131 . x = 973
x = 973 : 131
x = 973/131
\(a)88-3(7+x)=64\) \(c)[(x+32)-17]\div2=42\)
\(\Rightarrow3(7+x)=88-64\) \(\Rightarrow(x+32)-17=42.2\)\(\Rightarrow x+32-17=84\)
\(\Rightarrow3(7+x)=24\) \(\Rightarrow x=84+17-32\)
\(\Rightarrow7+x=24\div3\) \(\Rightarrow x=69\)
\(\Rightarrow7+x=8\)
\(\Rightarrow x=8-7\)
\(\Rightarrow x=1\)
\(b)131.x-941=2^7.2^3\) \(d)[(x^2+54)-32]\div2=61\)
\(\Rightarrow131.x-941=2^{10}\) \(\Rightarrow(x^2+54)-32=61.2\)
\(\Rightarrow131.x=1024+941\) \(\Rightarrow x+54-32=122\)
\(\Rightarrow131.x=1965\) \(\Rightarrow x=122+32-54\)
\(\Rightarrow x=1965\div131\) \(\Rightarrow x=100\)
\(\Rightarrow x=15\)
A) 88-3(7+x)=64
3(7+x)=88-64
3(7+x)=24
7+x=24:3
7+x=8
X=8-7
X=1
131 . x - 941 = 27 . 23
131 . x - 941 = 27+3
131 . x - 941 = 210
131 . x - 941 = 1024
131 . x = 1024 + 941
131 . x = 1965
x = 1965 : 131
x = 15
Vậy x = 15
nhéthien binh cong chua
k mình nhé bạn mình trả lời đầu tiên !
\(\Rightarrow131.x-941=1024\)
\(\Rightarrow131x=1965\)
\(\Rightarrow x=15\)
a) 36 x 25 x 4 = 36 x ( 25 x 4) = 36 x 100 = 3600
18 x 24 : 9= 24 x ( 18:9) = 24 x 2 = 48
41 x 2 x 8 x 5= 41 x 8 x ( 5x2) = 41 x 8 x 10 = 3280
b) 108 x (23 + 7)= 108 x 30 = 3240
215 x 86 + 215 x 14 = 215 x ( 86 + 14) = 215 x 100 = 21500
53 x 128 – 43 x 128= 128 x ( 53 - 43) = 128 x 10 = 1280
1, 99 x 1 = 99
2, 88 x 2 = 176
3, 7 x 9 x 3 x 6 + 2 = 1136
4, 3x + 9 = 0
3x = 0 - 9
3x = -9
x = ( -9 ) : 3
x = -3
Vậy x = -3
~ Hok tốt ~
a) x – 32 : 16 = 48 ó x – 2 = 48 ó x = 48 + 2 ó x = 50
b) 88 – 3.(7+x) = 64 ó 3.(7+x) = 88 – 64 ó 7 + x = 24:3 ó x = 8 – 7 ó x = 1
c) (5+4x) : 3 – 121 : 11 = 4 ó (5+4x) : 3 – 11 = 4 ó (5+4x) : 3 = 4 + 11 ó 5+4x = 15.3 ó 4x = 45 – 5 ó 4x = 40 ó x = 10
d) 15 – 2(3x+1) = 11.13 – 130 ó 15 – 2(3x+1) = 143 – 130 ó 15 – 2(3x+1) = 13
ó 2(3x+1) = 15 – 13 ó 3x + 1 = 2:2 ó 3x = 1 – 1 ó 3x = 0 ó x = 0
27x332+68x27+73x332+68x75=332x(27+73)+68x(27+75)
= 332x100+68x102
= 33200+6936=10136