Question

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 1

`\sf(x)/(100)+(3)/(100)=(8)/(100)`

Subtract 3/100 to both sides:


`\sf(x)/(100)=(5)/(100)`

Cross multiply:


`\sf100x=500`

Divide 100 to both sides:


`\sf~x=5`

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


`\sf~x+3=8`

Subtract 3 to both sides:


`\sf~x=5`