Answer:
- 
Step-by-step explanation:
Given
← cancel sec x on numerator/ denominator
= 
= -
Answer:
7
Step-by-step explanation:
5x-x=28 The dad is 5 times as old and the difference in their ages is 28years.
4x=28 Simplify and divide.
x=7
Answer: it's 31.5
Step-by-step explanation:because you would times 9 by 21 then divide by 6
9*21=189
189/6=31.5
5 2/3 ÷ 2 1/8 = 17/3 ÷ 17/8 = 17/3 x 8/17 = 8/3 = 2 2/3
Answer:x=42
Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable
