To solve for x, you need to isolate/get the variable "x" by itself in the equation:
16x - 3(4x + 5) = 2x + 9 Distribute -3 into (4x + 5)
16x + (-3)4x + (-3)5 = 2x + 9
16x - 12x - 15 = 2x + 9 Combine like terms (terms that have the same variable and power/exponent), which are 16x - 12x, as they have the same variable "x" and a power/exponent of 1.
4x - 15 = 2x + 9 Subtract 2x on both sides
4x - 2x - 15 = 2x - 2x + 9
2x - 15 = 9 Add 15 on both sides
2x - 15 + 15 = 9 + 15
2x = 24 Divide 2 on both sides to get "x" by itself
x = 12
Answer:
Step-by-step explanation:
The formula for finding the midpoint of two coordinates is expressed as;
M(X,Y) =
Given the coordinates c(-4,5) and d(-1,-4), x1 = -4, y1 = 5, x2 = -1 and y2 = -4.
For the X coordinate of the midpoint
X = x1+x2/2
X = -4+(-1)/2
X = -4-1/2
X = -5/2
X = -2.5
Similarly for Y:
Y = y1+y2/2
Y = 5+(-4)/2
Y = 5-4/2
Y = 1/2
Y = 0.5
Hence the midpoint coordinate of C(-4,5) and D (-1,-4) is (-2.5, 0.5)