To solve the first equation, 7•x - 5 = 86, we first add 5 to both sides:
7•x - 5 + 5 = 86 + 57•x = 91
Next, divide both sides by 7 to solve for x:
x = 91/7x = 13
Therefore, x = 13.
For the second equation, 250/(y+7) = 25, we first multiply both sides by (y+7) to get rid of the denominator:
250 = 25(y+7)
Next, distribute the 25 on the right side:
250 = 25y + 175
Subtract 175 from both sides:
250 - 175 = 25y75 = 25y
Divide both sides by 25 to solve for y:
y = 75/25y = 3
Therefore, y = 3.
To solve the first equation, 7•x - 5 = 86, we first add 5 to both sides:
7•x - 5 + 5 = 86 + 5
7•x = 91
Next, divide both sides by 7 to solve for x:
x = 91/7
x = 13
Therefore, x = 13.
For the second equation, 250/(y+7) = 25, we first multiply both sides by (y+7) to get rid of the denominator:
250 = 25(y+7)
Next, distribute the 25 on the right side:
250 = 25y + 175
Subtract 175 from both sides:
250 - 175 = 25y
75 = 25y
Divide both sides by 25 to solve for y:
y = 75/25
y = 3
Therefore, y = 3.