Explicație pas cu pas:
Buna !!
[tex]3.7x - 1.2 = 19.8 -0.5x \\ 3.7x + 0.5x = 19.8 + 1.2 \\ 4.2x = 21 \\ x = 21 \div 4.2 \\ x = 5[/tex]
**Verificăm:
[tex]3.7 \times 5 - 1.2 = 19.8 - 0.5 \times 5 \\ 18.5 - 1.2 = 19.8 - 2.5 \\ \red{ 17.3 = 17.3}[/tex]
Succes !!;)
✿❀AndreeaBrainly123❀✿
