Question #9f747

2 Answers
Sep 29, 2017

b=20

Explanation:

You will need to get b by itself.

You subtract 15 from both sides to get b alone.

15-15+b =35-15

b=20

Sep 29, 2017

We'll use transposing method,
remember, in this method if we transfer a number from LHS to RHS or vice versa, it will change from negative to positive and vice versa,
For example,
10x+2=22
10x=22-2
Notice that 2 in LHS was in positive, though that same 2 when transferred to RHS became negative.
Using the same principals,
15+b=35
Here 15 is in positive, so transferring it to RHS, it will become negative,
b=35-15
b=20
Hope you understood