-12(x-5)+7(3-x)=5 30(x+2)-6(x-5)-24x=100
(x+1-5)+7(3-x)=5 30(x+2)-6(x-5)-24x=100
(x+1)+(x+3)+(x+5)+........+(x+99)=0
Bài 22 :
a. - 12 . ( x - 5 ) + 7 . ( 3 - x ) = 5
b. 30 . ( x + 2 ) - 6 . ( x - 5 ) - 24x = 100
Bài 23 :
a. xy - 3x = - 19
b. 3x + 4y - xy = 16
1 )Tim x, y thuoc Z
x + y = x.y
2) Tim x thuoc Z
(x + 1)+(x+3)+(x+5)+...+(x+99)=0(x-3)+(x-2)+(x-1)+...+10+11=11-12(x-5)+7(3-x)=530(x+2)-6(x-5)-24x=100Tìm x biết: a) – 12(x – 5) + 7(3 – x) = 5 b) 30(x + 2) – 6(x – 5) – 24x =100
1.Tìm x
a) -12. (x - 5 ) + 7.( 3 - x ) = 15
b) 30.( x + 2 ) - 6.(x - 5 ) - 24x = 100
giúp mik với
Tìm x biết:
a, -12 (x-5)+7(3-x) = 5
b, 30(x+2)- 6(x-5) - 24x = 100
tìm x biết:
a.-12(x-5)+7(3-x)=5
b.30(x+2)-6(x-5)-24x=100
a) -12(x-5)+7(3-x)=5
b) 30(x+2)-6(x-5)-24x=100
Tìm x
a, -12.(x-5)+7.(3-x) = 15
b, 30-(x+2)-6.(x-5)-24x=100