Question

Tim x e n biet

12 x ( x - 1 ) = 0

b) 70 - 5 (x - 3 ) =45

Answer 1

a)x=1

b)x=8

k mk nah 

mk k lại cho!

Answer 2

a. 12 . (x - 1) = 0

=> x - 1 = 0 : 12

=> x - 1 = 0

=> x = 0 + 1

=> x = 1.

b/ 70 - 5(x - 3) = 45

=> 5(x - 3) = 70 - 45

=> 5(x - 3) = 25

=> x - 3 = 25 :5

=> x - 3 = 5

=> x = 5 + 3

=> x = 8

Answer 3

X-1=12x0

X-1=0

X=0+1

x=1

b) 5x(X-3)=70-45

5x(X-3)=25

X-3=25:5

X-3=5

X=5+3

X=8