1.3(8-b)+3.7b=5.2 Please show steps by steps

Goal isolate variable

1 distribute

2 combine like terms

(Left / right )

3 add or subtract

4 multiply or divide

5 reduce/simplify

b = -5.2/2.4

Step-by-step explanation:

1.3(8-b)+3.7b=5.2

10.4 - 1.3b + 3.7b = 5.2

10.4 + 2.4b = 5.2

2.4b = 5.2 - 10.4

2.4b = -5.2

b = -5.2/2.4

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.