Tìm x biết: a) – 12(x – 5) + 7(3 – x) = 5 b) 30(x + 2) – 6(x – 5) – 24x =100
-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
tìm x biết:
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
tìm x:
a) -12(x-5)+7(3-x)=15
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
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
Tìm x biết:
a}-12[x-5]+7[3-x]=15
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