Respuesta :
Answer:
- C) x + 6.5 = 6.3
Step-by-step explanation:
Solve each equation and compare solutions.
- A) -1.8 + x = -1.6 ⇒ x = 1.8 - 1.6 ⇒ x = 0.2
- B) 7.5 x = 1.5 ⇒ x = 1.5/7.5 ⇒ x = 0.2
- C) x + 6.5 = 6.3 ⇒ x = 6.3 - 6.5 ⇒ x = - 0.2, this is different
- D) x/5 = 0.04 ⇒ x = 0.04*5 ⇒ x = 0.2
Answer:
x + 6.5 = 6.3
Step-by-step explanation:
Solve each equation for x:
[tex]\begin{aligned}\textsf{Equation 1}: \quad \quad \quad -1.8+x&=-1.6\\-1.8+x+1.8&=-1.6+1.8\\x&=0.2\end{aligned}[/tex]
[tex]\begin{aligned}\textsf{Equation 2}: \quad\quad \quad\quad \quad 7.5x&=1.5\\7.5x \div 7.5&=1.5 \div 7.5\\x&=0.2\end{aligned}[/tex]
[tex]\begin{aligned}\textsf{Equation 3}: \quad \quad \quad \quad x+6.5&=6.3\\x+6.5-6.5&=6.3-6.5\\x&=-0.2\end{aligned}[/tex]
[tex]\begin{aligned}\textsf{Equation 4}: \quad \quad \quad\quad \quad \quad\dfrac{x}{5}&=0.04\\\dfrac{x}{5} \cdot 5&=0.04\cdot 5\\x&=0.2\end{aligned}[/tex]
The solution for equations 1, 2 and 4 is x = 0.2.
The solution for equation 3 is x = -0.2.
Therefore, all of the equations have the same solution except:
- x + 6.5 = 6.3