SammieMacaranas SammieMacaranas

14-11-2018
Mathematics

contestada

what is the value of x? 7x-9=19

Respuesta :

cmoreno511 cmoreno511

14-11-2018

7x-9=19

Add 9 both sides

7x-9+9=9+19

7x=28

Divide both sides by 7

7x/7=28/7

Simplify

X= 4

To check substitute into original equation .

7x-9=19

7(4)-9= 19

28-9= 19

19=19 it checks

Answer Link

beanatalya92104 beanatalya92104

14-11-2018

x=4

19 plus 9 is 28

28 divide by 7 is 4

7 times 4 plus 9 is 19

Answer Link

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