Question

1. Solve the equation: x + 7.4 = 11.2

A. 18.6
B. 7.4
C. 11.2
D. 3.8
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2. Solve the equation: x9 = 4
3. Solve the equation: -6x = 48
4. Solve the equation: 13x = −20

Answer 1

1. Solve the equation: x + 7.4 = 11.2

`x + 7.4 = 11.2 \\ \\ x = 11.2 - 7.4 \\ \\ x = 3.8`

3. Solve the equation: -6x = 48

`- 6x = 48 \\ \\ x = ( - 48)/( 6) \\ \\ x = - 8`

4. Solve the equation: 13x = −20

`13x = 20 \\ \\ x = (20)/(13) \\ \\ x = 1.5`

2. Solve the equation: 9x = 4
`9x = 4 \\ \\ x = (4)/(9)</strong></p><p><strong> \\ \\x = 0.4`

Answer 2

• 3.8
• 0.4
• -8
• 1.53

Explaination :

1. Solve the equation x + 7.4 = 11.2

>> x + 7.4 = 11.2

>> x = 11.2 - 7.4

>> x = 3.8

2. Solve the equation : 9x = 4

>> 9x = 4

>> x = 4 / 9

>> x = 0.4

3. Solve the equation : -6x = 48

>> -6x = 48

>> -x = 48 / 6

>> -x = 24 / 3

>> -x = 8

>> x = -8

4. Solve the equation: 13x = −20

>> 13x = −20

>> x = -20 / 13

>> x = -1.53