Tìm x

b) x = 2 ^ 4 + 3 ^ 2 3 ^ 2

d)42x+37.42=39.42 f)x-17=(-8)-17

h)(3x-2^ 4 ).7^ 3 =2.7^ 4

j 7 - x = 8 - (- 7)

1) 10 + 2x = 4 ^ b :43