Question

11x + 12 = 8x - 9 ... please

Answer 1

Inverse operations should be your first choice
11x+12=8x-9
-8x. -8x
3x+12=-9
-12 -12
3x=-21
Dived both side by 3
X=-7

Answer 2

Assignment:
`\bold{\Solve \ Equation: \ 11x+12=8x-9}`

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Answer:
`\boxed{\bold{x=-7}}`

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Explanation:
`\downarrow\downarrow\downarrow`

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[ Step One ] Subtract 12 From Both Sides

`\bold{11x+12-12=8x-9-12}`

[ Step Two ] Simplify

`\bold{11x=8x-21}`

[ Step Three ] Subtract 8x From Both Sides

`\bold{11x-8x=8x-21-8x}`

[ Step Four ] Simplify

`\bold{3x=-21}`

[ Step Five ] Divide Both Sides By 3

`\bold{(3x)/(3)=(-21)/(3)}`

[ Step Six ] Simplify

`\bold{x=-7}`

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`\bold{\rightarrow Mordancy \leftarrow}`