2 x + 5 = 15
2x = 15 - 5
x = 10 : 2
x = 5
2x + 5 = 15
2x = 15 - 5
2x = 10
x = 10 : 2
x = 5
2 x + 5 = 15
2 x = 15 - 5
x = 10 : 2
x = 5
2 x + 5 = 15
2x = 15 - 5
x = 10 : 2
x = 5
2x + 5 = 15
2x = 15 - 5
2x = 10
x = 10 : 2
x = 5
2 x + 5 = 15
2 x = 15 - 5
x = 10 : 2
x = 5
tim x biet (x+11) /(26+2x)=2/3
Tim X,biet :a)25/40 bang x/8,b)x cong 15/3 bang34/6
tim cac so tu nhien biet x biet
24 : x + 16 : x =5
tim x , biet : 15 / 24 = x / 56
Tim x, biet : 5/4 nhan x = 5/8 + 3/12
tim x biet : 30475:5+x=18981
Tim x biet : 17745 : x : 7 = 5
khong lam tin hay tim a trong cac phen tinh sau
a 95 x { a - 75 } = 95 x { 100 - 75 }
b } 2003 + a x 15 = 2003 x 10 x 3 x5
minh biet ket qua nhung khong biet cach trinh bay
Tim x biet : ( x + 1 ) + ( x + 2 ) ( x + 3 ) + ( x +4 ) + ( x + 5 ) = 4 + 5 + 6 + 7 + 8