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BECE Mathematics 2022 Paper

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Question : 33

Total: 40

Given that

117(12+18)=117(15+k)

, find the value of

k

$15$
$-15$
$-30$
$30$

Solution:

Concept:

Since the same non-zero number

117

multiplies both brackets, it can be cancelled from both sides.

Explanation:

Divide both sides of

117(12+18)=117(15+k)

by

117

.

We get

12+18=15+k

.

Now,

12+18=30

.

So,

30=15+k

.

Subtract

15

from both sides:

30-15=k

.

Therefore,

k=15

.

Answer:

k=15

, which is option A.

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