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3 years ago

What inverse operation should be used to isolate the variable in the equation k - 9 = 10?

Mathematics

2 answers:

fgiga [73]3 years ago

6 0

Answer:

k-9=10

k=10+9

k=19

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Julli [10]3 years ago

5 0

K = 19 is the answer

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3 years ago

Read 2 more answers

1/7 times x = 1 5/4 times x=1 3 1/2 times x=1 5/7 times x=1

antiseptic1488 [7]

( i )

$= > \frac{1}{7} \times x = 1 \\ \\ \\ \\ = > \frac{1}{7} \times 7 \times x = 1 \times 7 \\ \\ \\ \\ = > x = 7$

( ii ) :

$= > \frac{5}{4} \times x = 1 \\ \\ \\ \\ = > \frac{5}{4} \times \frac{4}{5} \times x = 1 \times \frac{4}{5} \\ \\ \\ \\ = > x = \frac{4}{5}$

( iii ) :

$= > 3\frac{1}{2} \times x = 1 \\ \\ \\ \\ = > \frac{7}{2} \times x = 1 \\ \\ \\ \\ = > \frac{7}{2} \times \frac{2}{7} \times x = 1 \times \frac{2}{7} \\ \\ \\ \\ = > x = \frac{2}{7}$

( iv ) :

$\frac{5}{7} \times x = 1 \\ \\ \\ \\ = > \frac{5}{7} \times \frac{7}{5} \times x = 1 \times \frac{7}{5} \\ \\ \\ \\ = > x = \frac{7}{5}$

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4 years ago