Simplify both sides of the equation. (Distribute)
(−7.8)(x)+(−7.8)(6.5)=−25.74 −7.8x + −50.7= −25.74 -------------> −7.8x − 50.7= −25.74
Add 50.7 to both sides.
−7.8x − 50.7 + 50.7 = −25.74 + 50.7 ---------------------> −7.8x = 24.96
Divide both sides by -7.8.
−7.8x /−7.8 = 24.96/−7.8
X= −3.2 :D