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Progress in Mathematics

Subtract:2ab+...

Question

Subtract:
$2 a b + c d f r o m 4 a b - 3 c d$

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Solution

To subtract algebraic expressions arrange the like terms in the same column.
$4 a b - 3 c d 2 a b + c d - - (c h a n g e t h e s i g n o f t e r m)_2 a b - 4 c d_$

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Similar questions

Q. If AB = 7.5 cm and CD = 2.5 cm, construct a segment whose length is equal to

(i) AB − CD
(ii) 2AB
(iii) 3CD
(iv) AB + CD
(v) 2AB + 3CD

Add the following

$2 a b - 3 c d, 4 a b + 5 c d$

Subtract

$- 4 x y + 2 a b f r o m 10 x y - 4 a b$

Q. If AB = 7.5 cm and CD = 2.5 cm, construct a segment whose length is equal to

(i) AB − CD
(ii) 2AB
(iii) 3CD
(iv) AB + CD
(v) 2AB + 3CD

\frac{(4 a b + 3 c d)^{2} - (4 a b - 3 c d)^{2}}{48} = a b c d

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