Question

Q4. Evaluate the following using a suitable identity:
(a) (998)(b) (10.2) (c) (9.8)3 (d) 9982 - 4 (e) 9992 - 1​

Answer 1

Answer:

2x+3=x+15

Step 1: Subtract x from both sides.

2x+3−x=x+15−x

x+3=15

Step 2: Subtract 3 from both sides.

x+3−3=15−3

x=12

Answer:

x=12