Question

  

Answer 1

\(a,2x=4\\ x=4:2\\ x=2\\ b,2x=5-3\\ 2x=2\\ x=2:2\\ x=1\\ c,3x=11-5\\ 3x=6\\ x=6:3\\ x=2\\ d,5x=12-7\\ 5x=5\\ x=5:5\\ x=1\\ e,3x=10-4\\ 3x=6\\ x=6:3\\ x=2\\ f,4x=9+7\\ 4x=16\\ x=16:4\\ x=4\)

Answer 2

a) 2.x-4=0 ; 2.x = 4 ; x= 4 : 2—> x=2

b) 5-2x=3 ; 2x = 2 ; x= 2:2—> x=1

c) 3x+5=11 ; 3x = 6 ; x= 6:3—> x=2

7+5x=12 ; 5x = 5 ; x = 5:5—> x=1

10-3x=4 ; 3x = 6 ; x = 6:3—> x=2

4x-7=9 ; 4x = 16 ; x = 16:4—> x=4

CHÚC BẠN HỌC TỐT :-)