Question

Solve as an equation in two variable
3x+9 =0

Answer 1

Answer:

‐3

Step-by-step explanation:

3x+9=0

send 9 to RHS( right hand side) ( + become ‐)

3x=0‐9

3x= ‐9

send 3 to RHS (× multiplication becomes ÷devison)

x= ‐9÷3

x= ‐3

Answer 2

Answer:

▪3x+9=0

3x=(-9)

x=(-9)/3=(-3)

x=(-3)

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