Решите уравнения 1) 2,3×8-5×(х:2-13)=10,4 2)160:(3х+2)-(28-26)=18 3)(29+7х):5+(27-11)=26
1) —2,5x = —8 — 65 —2,5x = —73 x = = 29,2 = 2) 160 = (3x + 2) × 20 160 = 60x + 40 160 — 40 = 60x 120 = 60x x = 2 3) 29 + 7x = 5 × 10 29 + 7x = 50 7x = 50 — 29 7x = 21 x = 3