7d - 12 + 2d + 3 = 18
Group the like terms for d on the left side. Move the integers to the right side remembering to reverse their signs (positive/negative)
7d + 2d = 18 + 12 - 3
Which becomes:
9d = 27
Divide each side by 9:
d = 3
3
It is an equation and the value of x is 2
It is an equation and the value of x is 4
It is an equation and the value of b is 3
If: x+18 = 2x Then: x = 18
Commutative propertry
It is the equation of a sraight line.
3
It is an equation and the value of x is 2
It is an equation and the value of x is 4
It is an equation and the value of b is 3
U can subtract 18 from each side of the equation.
15
An equation where X = 18
If: x+18 = 2x Then: x = 18
It is 18 and the y intercept is 3
Multiply the top equation by 3 and the bottom equation by 2. (-4, 1)