weldontimmons weldontimmons

22-10-2020
Mathematics

contestada

what is 3x + 9 =21 when x =4

Respuesta :

zoeyangelee zoeyangelee

22-10-2020

Answer:

21

Step-by-step explanation:

Original Equation:

3x + 9 = 21

x = 4

Plug the value into the equation.

3 ⋅ 4 = 12

12 + 9 = 21

21 is the answer.

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