Question

C

Examine the worked problem and solve the equation.
The solution is x =
1
= 9
3
1
+ 3 = 9+
28
3
1

Answer 1

x = 7

Explanation:

The final step in this "two-step" linear equation is to multiply both sides by the inverse of the coefficient of x.

__

`(4)/(3)(x)=(28)/(3)\qquad\text{given}\\\\(3)/(4)\cdot(4)/(3)(x) = (3)/(4)\cdot (28)/(3)\qquad\text{multiply by $(3)/(4)$}\\\\x=(28)/(4)=7`

The solution is x = 7.