solving:
[tex]( - 0.7 + 3.14)x = - 5.2 - 2.8[/tex]
[tex]2.44x = - 8[/tex]
[tex]x = \frac{ - 8}{2.44} [/tex]
now checking:
[tex] - 0.7 \times \frac{ - 8}{2.44} + 2.8 = - 3.14 \times \frac{ - 8}{2.44} - 5.2[/tex]
[tex]\frac{5.6}{2.44} + 2.8 = \frac{25.12}{2.44} - 5.2[/tex]
[tex]\frac{12.432}{2.44} = \frac{12.432}{2.44}[/tex]
