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David's last equation to solve is x/100+3/100=8/100. Write and solve an equivalent equation with easier numbers that would give him the same answer.



Answer :

iGreen
[tex]\sf\dfrac{x}{100}+\dfrac{3}{100}=\dfrac{8}{100}[/tex]

Subtract 3/100 to both sides:

[tex]\sf\dfrac{x}{100}=\dfrac{5}{100}[/tex]

Cross multiply:

[tex]\sf100x=500[/tex]

Divide 100 to both sides:

[tex]\sf~x=5[/tex]

Or we could just multiply both sides of the equation by 100, to give us:

[tex]\sf~x+3=8[/tex]

Subtract 3 to both sides:

[tex]\sf~x=5[/tex]

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