Page 3 - LN

Then,

o
o
= b + b + 40 = 180
o
= 2b + 40 = 180
By transposing 40 from LHS to RHS it becomes -40

= 2b = 180 – 40

= 2b = 140

Now, divide both the side by 2

= 2b/2 = 140/2

o
= b = 70

o
Hence, 70 is the base angle of an isosceles triangle.
3. Thrice a number when increased by 8 gives 26. Find the number.

Solution:-

3X + 8 = 26

3X = 26 – 8

3X = 18

X = 6

4. Solve 3x + 7 = 35 – x and check your answer

Solution:-

3x + x = 35 – 7

4x = 28

X = 28/4

X = 7

5. A number is as much greater than 84 as it is less than 108. Find the number.

Solution: