Решите плизз -(5.7-2.9)-(3.8x-3.7)=4.9x (4.2x+3.1)-(0.7x-2.70)=6.85...

Question

Решите плизз
-(5.7-2.9)-(3.8x-3.7)=4.9x
(4.2x+3.1)-(0.7x-2.70)=6.85
-(2.5X-2.5)-(3.1x-3.1)=-(1.6-1.6x)
(3.1x+3.1)-(1.8x+1.8)=1.6x+1.6

Answer 1

................................................................

---

---