Question

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Answer 1

`\\ \sf\longmapsto12x+7=10(x+1)-3`

`\\ \sf\longmapsto 12x+7=10x+10-3`

`\\ \sf\longmapsto 12x+7=10x+7`

`\\ \sf\longmapsto 12x=10x`

`\\ \sf\longmapsto x=10/12=5/6`

We need natural number

• put 0

`\\ \sf\longmapsto 12(0)=10(0)`

Yes 0 is a solution