Question

128 + 720 : а = 136​

Answer 1

128 + 720 : а = 136

720 : а = 136 - 128

720 : а = 8

а = 720 : 8

а = 90

Answer 2

To solve the equation $128 + \frac{720}{a} = 136$, we can follow these steps:

1. Subtract 128 from both sides of the equation: $128 + \frac{720}{a} - 128 = 136 - 128$

   Simplifying the left side gives us: $\frac{720}{a} = 8$

2. Multiply both sides of the equation by $a$ to get rid of the fraction: $a \cdot \frac{720}{a} = 8 \cdot a$

   On the left side, the $a$ in the numerator cancels out with the $a$ in the denominator, leaving us with: $720 = 8a$

3. Divide both sides of the equation by 8 to solve for $a$: $\frac{720}{8} = \frac{8a}{8}$

   Simplifying gives us: $90 = a$

Therefore, the value of $a$ that satisfies the equation is $90$.