The <span>sum of a number and 5, less than 10, is 3 can be expressed as:
x + 5 - 10 = 3
where x is unknown number.
x + 5 = 3 + 10
x + 5 = 13
x = 13 - 5
x = 8</span>
42 = 3x - 15 Since you know x = 19, you can plug in 19 for "x" in the equation
42 = 3(19) - 15
42 = 57 - 15
42 = 42 This is the solution
x = 19 is the solution because 3 • 19 – 15 = 57 – 15 = 42. (3rd choice)
Step-by-step explanation:
5n-2
5(4) - 2
20-2=18
A= 18
5n - 2 =48
5n=48+2
5n=50
divide by 5
n= 10
B=10
Answer:
6. MN
7. MN
8. MN
9. LMN
10. HN
Step-by-step explanation: