Question

7x+4+x=20 what is x? plz help

Answer 1

x=2

Explanation:

7x+4+x=20

Combine like terms

8x +4 = 20

Subtract 4 from each side

8x+4-4 =20-4

8x = 16

Divide each side by 8

8x/8 = 16/8

x = 2

Answer 2

7x+4+x=20

8x+4=20

8x+4-4=20-4

8x=16

Divide by 8 for 8x and 16

8x/8=16/8

x=2

Check answer by using substitution method

7(2)+4+2=20

14+6=20

20=20

Answer is x=2