# X09 · Optional projects job

A note correctly finds six $8 kits=$48, then writes 6 × $3=$18 for a setup fee that is paid once. Repair and check.

Use scrap paper or a private explanation. No purchase, household information or public performance.

## Adult teaching after an own try

### Answer

$48 + $3=$51. The first model step is correct; the fee multiplication is wrong.

### Why

Locate the actual first incorrect step in mixed correct and incorrect work.

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