Question

a) 2 ori x + 3 =17 x=? b) 4 ori x +7 = 27 ×=? c) 9+3 ori × =51 x=? d) 2 ori 4 ori x =320 x=? e) 5 ori x : 7 =175 x=? Va rog sa mă ajutați!

Answer 1

a) 2x=17-3
2x=14
x=14:2
x=7

b) 4x=27-7
4x=20
x=20:4
x=5

c) 3x=51-9
3x=42
x=42:3
x=14

d) 8x=320
x=320:8
x=40

e) 5x=175×7
5x=1225
x=1225:5
x=245

Answer 2

a) 2x+3=17, 2x=17-3=14, x=14/2=7,      b) 4x+7=27, 4x=20, x=20/4=5,
c) 9+3x=51, 3x=51-9=42,  x=42/3=14,  d) 2*4*x=320, 8x=320, x=320/8=40,
e) 5x/7=175,  5x=175*7=1225, x=1225/5=245,