Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a) \(75:\left(x-2\right)+4=7\)
\(\Rightarrow75:\left(x-2\right)=7-4\)
\(\Rightarrow75:\left(x-2\right)=3\)
\(\Rightarrow x-2=75:3\)
\(\Rightarrow x-2=25\)
\(\Rightarrow x=27\)
b) \(125-3\left(x+3\right)=65\)
\(\Rightarrow3\left(x+3\right)=125-65\)
\(\Rightarrow3\left(x+3\right)=60\)
\(\Rightarrow x+3=60:3\)
\(\Rightarrow x+3=20\)
\(\Rightarrow x=17\)
a,\(75:\left(x-2\right)+4=7\\ \Rightarrow75:\left(x+2\right)=3\\ \Rightarrow x+2=25\\ \Rightarrow x=23.\)
b, \(125-3\left(x+3\right)=65\\ \Rightarrow3\left(x+3\right)=60\\ \Rightarrow x+3=20\\ \Rightarrow x=17.\)
C =[125.(73-75)]:(-25)2
=125.(-2):(-25).2
=-250:(-50)
=5
E=125.9.(-4).(-8).25.7
=125.(-8).25.(-4).7.9
=-1000.(-100).63
=6300000
C = ( 125 . 73 - 125 . 75 ) : ( -50)
C = 125 .( -2 ) : (-50)
C = -250 : -50
C = 50
G = ( -3 )2+( -5)3: l -5 l
G = 9 + ( -125) : 5
G = 9 + ( -25 )
G= ( -16 )
E = 125 .9.*( -4 ) . ( -8) .25.7
E = 25.5 .( -4 ) .9 .2. ( -4 ) .25 .7
E =( -100 ).10.( -100).63
E = 10000.630
E = 630000
**** mha
1) 125-(-75)-326+26
= 125+75-326+26
=200-300
=-100
2) (-5).(-3)³-(-2).5²-75
= -5.-27+2.25-75
= -135+50-75
=-160
Câu1: Tính
1) 125-(-75)-326+26
=125+75-326+26
=125+75-300
=200-300
=-100
2) (-5).(-3)³-(-2).5²-75
=(-5).(-27)-(-50)-75
=(-5).(-27)+50-75
=135+50-75
=110
\(4\sqrt{12}-3\sqrt{45}-5\sqrt{75}+2\sqrt{125}\\ =8\sqrt{3}-9\sqrt{5}-25\sqrt{3}+10\sqrt{5}\\ \sqrt{5}-17\sqrt{3}\)
\(\left(-67\right)+125+\left(-33\right)+75\)
\(=\left[\left(-67\right)+\left(-33\right)\right]+\left(125+75\right)\)
\(=100+200=300\)
_______
\(86.\left(-108\right)+86.9-86\)
\(=86.\left[\left(-108\right)+9-1\right]\)
\(=86.\left(-100\right)=-8600\)
_______
\(23.\left(-16\right)-23.84+300\)
\(=23.\left[\left(-16\right)-84\right]+300\)
\(=23.\left(-100\right)+300\)
\(=-2300+300\)
\(=-2000\)
______
\(235-5\left[\left(5^3-3^3\right):14\right]\)
\(=235-5\left[\left(125-27\right):14\right]\)
\(=235-5\left[98:14\right]\)
\(=235-5.7\)
\(=235-35\)
\(=200\)
_______
\(95-\left(129-74\right):5+2022^0\)
\(=95-55:5+1\)
\(=95-11+1\)
\(=84+1=85\)
\(#NqHahh\)
75x3=225 125x3=375
225=375 nha