Respuesta :

12651241

Answer:

x = 5

Step-by-step explanation:

70 - 4x = 30 + 4x

Add 4x on both sides of the equation,

70 - 4x + 4x = 30 + 4x + 4x

70 = 30 + 8x

Subtract 30 from both sides of the equation to isolate 8x,

70 - 30 = 30 + 8x - 30

40 = 8x

Divide both sides of the equation by 8 to solve for x,

40 ÷ 8 = 8x ÷ 8

5 = x

Genevieve7Star

Answer:

= 5 groups.

Step-by-step explanation:

  1. Solve the equation
  •    70 - 4x = 30 +4x
  •    70 - 30 = 4x + 4x
  •        40    =      8x
  •             x  = 5

    2. Substitute the equation

  • Classroom A = 70 STUDENTS
  • Classroom B = 30 STUDENTS.
  • 70 - 20  =  30 + 20
  •   50   =   50
  • 20 students from classroom A in groups of 4 = 20 divide by 4.

                        = 5 groups.

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