$\frac{21}{1} \frac{7}{8} = \frac{21}{x} ( \frac{21}{1} ) 
 \\ Cross-out, the DOUBLE 21's \\ 7(x) = 21 \\ 21(8) = ? \\ 7(x) = 168 \\ \frac{168}{7} = 24 \\ Answer: x = 24$ $Choice. 2$

3 0

4 years ago

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List all the elements of each set. Set of the values of x that turn equation 0.7(x−7)−4.9=5.7 into a true statement

Paraphin [41]

Answer: 22.14 (22.1428571429)

Step-by-step explanation:

Let's Start with the equation

0.7(x−7)−4.9=5.7

Add 4.9 to both sides

0.7(x-7)=10.6

Divide both sides by 0.7

x-7= 15. 1428571429

Add 7 to both sides

x= 22.1428571429 or 22.14

3 0

3 years ago