Question

if x=3 and y=-2 find the value of 4x + 7y
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Answer 1

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$\bf{Given:-x=3 \: and \: y=-2}$

$\bf{4x+7y}$

$=>4×(3)+7 \times (-2)$

$=>12-14=-2$

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Answer 2

SOLUTION

TO DETERMINE

The value of 4x + 7y when x = 3 , y = - 2

EVALUATION

Here the given expression is 4x + 7y

Putting x = 3 , y = - 2 we get

4x + 7y

= ( 4 × 3 ) + [ 7 × ( - 2 ) ]

= 12 - 14

= - 2

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