Question

`\sf 2x+7+8x=35`

Answer 1

`2x+7+8x=35`

`2x+8x+7=35`

`10x+7-7=35-7`

`10x=28`

`\cfrac{10x}{10}=\cfrac{28}{10}`

`x=\cfrac{14}{5}`

or

`x=2.8`

Answer 2

x=14/5

Explanation:

Group like terms

2x+8x+7=35

Add similar elements: 2x+8x=10x

10x+7=35

Subtract 7 from both sides:

10x+7−7=35−7

Simplify

10x=28

Divide both sides by 10

10x/10 =28/10

Simplify:

x=14/5