Question

Vă rog repede! Dau coroană plz.☺☺☺☺☺

Answer 1

a) - 13x + 4 = 21 + 4x ==> 17x = - 17 ==> x = - 1
b) 7x - 16 = 16 + 5x ==> 2x = 32 ==> x = 16
c) 0.3x - 0.6 = 0.1x + 0.8 ==> 0.2x = 1.4 ==> x = 7
d) x * sqrt ((- a) ^ 2) + x * sqrt ((- 2) ^ 2) + x * sqrt ((- 3) ^ 2) = 6 ==> x + 2x + 3x = 6 ==> x = 1
e) (4x - 3) * (- 3) = 6x + 23 ==> - 12x + 9 = 6x + 23 ==> 18x = - 14 ==> x = - 7 / 9
f) (1 ^ 2 - x) + (2 ^ 2 - x) + (3 ^ 3 - x) = 50 ==> 1 - x + 4 - x + 9 - x = 50 ==> 3x = - 40 ==> x = - 40 / 3
g) 5 (x - 3) + 11 = 2x ==> 5x - 15 + 11 = 2x ==> 3x = 4 ==> x = 4 / 3
h) 11 (1 - x) + 7x = 15 ==> 11 - 11x + 7x = 15 ==> 4x = -4 ==> x = -1

Restul mai faci si tu, sunt destul de multe.