-12.(x-5)+7.(3-x)=5
=>-12x-(-60)+21-7x=5
=>-12x+60+21-7x=5
=>-12x-7x=5-21-60
=>(-12-7).x=-76
=>-19x=-76
=>x=(-76):(-19)
=>x=4
b,(-14)+x-7=-10
=>x-7=-10+14
=>x-7=4
=>x=4+7
=>x=11
Tim x :
2/x-1/+5=15
7x-14=3x=22
Ai lam xong dau tien thi minh tick cho nhe
x+7=-5-14
GIUP MINH NHE ROI KET BAN VOI MINH LUON NHE
tìm x:
a) -7(5-x)-2(x-10)=15
b) 4(x-5)-3(x+7)= -19
c) 4(2-x)+3(x-5)=14
d) -7(3x-5)+2(7x-14)=28
e) 5(4-x)-7(2-x)=-2
f) 5(x-7)+10(3-x)=20
g) 7(5-x)+5(x-2)=15
h) 5(x-6)-2(x+3)=12
i) 3(x-4)-(8-x)=12
giúp mk vs
Tìm x là stn
6x : 33 :4 = 2
3.(x-5)3=81
7x - 2x=617: 615+ 38 : 26
Giup minh vơi a , co cach lam nhe a
Cam on
a). -7.(3x-5)+2.(7x-14)=28
b). 5.(3-2x)+5.(x-4)=6-4x
c). -5.(2-x)+4.(x-3)=10x-15
d). 2.(4x-8)-7.(3+x)=|-4|.(3-2)
1) Tìm x biết
a) 4.(2-x)+3.(x-5)=14
b) 7.(x-9)-5.(6-x)=-6+11x
c) -7(3x-5).2(7x-144)=28
2) Tìm x,ythuôc Z biết
(2x+3).(2y-1)=-5
1) 7. (3x+5)+2.(7x+14)=98. 2) 4. (x -5)+3.(x+7)=22
3) 5.(4-x) +7.(x-2)=24. 4) 3.(x -5)+6.(x+3)=12
5) 4-x+5.(x+2)=38. 6) 5.( x-3)+2.(x+8)=22
7) 5.(x-7)+10.(4+x)=20. 8) 4.(x+10)+8.(x-3)=24
9) 4.(5-x)+5.(x-2)=15. 10) 4.(x-1)+3.(x-2)=-1
bai 1
a,x:13=41
b,1428:x=14
c,4x:17=0
d,7x-8=713
e,8[x-3]=0
g,0:x=0
giup minh nhe
-12x(x-5)+7x(3-x)=5
