一元一次方程式解

识别下列哪个是一元一次方程式：A) 2x + 5 = 9 B) 3x^2 + 4 = 7 C) 4x - 2 = 3x + 1

• D) 5x + 3 = 2

• B) 3x^2 + 4 = 7

• A) 2x + 5 = 9

• C) 4x - 2 = 3x + 1

解方程式2x + 5 = 9

• x = 6

• x = 3

• x = 2

• x = 4

验证方程式的解是否正确：x = 2 解方程式2x + 5 = 9

• Maybe

• Yes

• Sometimes

• No

应用一元一次方程式解决问题：如果2x + 3 = 11，求x的值

• 6

• 2

• 4

• 8

表示方程式2x - 4 = 10的解

• x = 12

• x = 8

• x = 5

• x = 7

识别下列哪个是一元一次方程式：A) 3x + 2 = 8 B) x^2 + 5x = 10 C) 2x - 3 = 4

• C) 4x - 2 = 7

• B) 2x + 3 = 4

• A) 3x + 2 = 8

• D) 5x^2 = 20

解方程式3x + 2 = 8

• x = 3

• x = 4

• x = 2

• x = 5

验证方程式的解是否正确：x = 2 解方程式3x + 2 = 8

• No, x = 4 is the correct solution.

• Yes, x = 2 is the correct solution.

• No, x = 5 is the correct solution.

• No, x = 3 is the correct solution.

应用一元一次方程式解决问题：如果4x - 7 = 9，求x的值

• 4

• 2

• 3

• 5

表示方程式5x + 10 = 25的解

• x = 10

• x = 5

• x = 3

• x = 7