are my answers right
1.8y-3-6=-10
x=-1 5/8
2. 7d-2+5=20
d=2 3/7
1. wrong
2. correct
how do u do number 1
8y-3-6=-10
8y - 9 = -10
8y = -10 + 9
8y = -1
y = ?
To check if your answers are correct, we can substitute the values you found back into the original equations and see if they satisfy the equations.
1. Let's substitute x = -1 5/8 into the equation 8y - 3x - 6 = -10:
8y - 3(-1 5/8) - 6 = -10
First, let's convert -1 5/8 to an improper fraction:
-1 5/8 = -13/8
Substituting:
8y + (39/8) - 6 = -10
8y + (39/8) = -10 + 6
8y + (39/8) = -4
Next, let's isolate y by moving the constant and fraction to the other side:
8y = -4 - (39/8)
8y = (-32/8) - (39/8)
8y = -71/8
Finally, divide both sides by 8 to solve for y:
y = (-71/8) / 8
y = -71/64
Therefore, the solution for the equation 8y - 3x - 6 = -10 is y = -71/64.
2. Let's substitute d = 2 3/7 into the equation 7d - 2 + 5 = 20:
7(2 3/7) - 2 + 5 = 20
First, let's convert 2 3/7 to an improper fraction:
2 3/7 = 17/7
Substituting:
7(17/7) - 2 + 5 = 20
17 - 2 + 5 = 20
20 = 20
The equation is satisfied because both sides of the equation are equal.
Therefore, the solution for the equation 7d - 2 + 5 = 20 is d = 2 3/7.
Based on the calculations, your solutions seem to be correct!