EM-1617

Substitution

E Math · Secondary 4 · Easy · Substitution

Express

5x - 3y

in terms of

a

and

b

, given that

x = 2a

and

y = a - b

.

$7a + 3b$
$7a - 3b$
$13a + 3b$
$10a - 3b$

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