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Lilia Murphy
Mathematics
23 November, 09:18
What is the value of x? 7x-9=19
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Larry
23 November, 09:25
0
x=4
19 plus 9 is 28
28 divide by 7 is 4
7 times 4 plus 9 is 19
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Barbara Solomon
23 November, 09:45
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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
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