中１数学 方程式 かっこのある

• 3x + 15
• x + 15
• 3x + 10
• 3x + 5

• 12x + 15
• 12x + 5
• 9x + 15
• 7x + 10

• 10x - 90
• 20x + 90
• 5(2x - 9)
• 20x - 90

• x = -10

• x = 0

• x = 5

• x = -5

• x = -5

• x = -7

• x = 0

• x = 3

• x = 0

• x = 2

• x = -1

• x = -2

• x = 2

• x = 1

• x = 3

• x = 4

• x = 3

• x = 2

• x = 4

• x = 5

• x = -25

• x = -10

• x = -18

• x = 5

• x = 5

• x = 6

• x = 4

• x = 7