## What is the value of a in the equation 5a – 10b = 45, when b = 3?

October 14, 2019// Blog//

e EDF= Measure of angle DFG

**Answer:**

b.22.

**Step-by-step explanation:**

We are given that quadrilateral DEFG is a rectangle.

We know that every angle of reactangle is of 90 degrees.

We are given that

Measure of angle EDF=5x-3

Measure of angle DFG=3x+7

We know that every every angle of rectangle is equal.

Measure of angle EDF=Measure of angle DFG

By using subtraction property of equality

By simplification

By using subtarction property of equality

By using division property of equality

By simplification

Substitute the value x=5 then

Measure of angle EDF=

Measure of angle EDF=25-3

By simplification

**Measure of angle EDF=22**

**Hence, the measure of angle EDF=.**