Question

Value of 3x – 7y , if x = 7 and y = -1 is ​

Answer 1

Answer:

28

Step-by-step explanation:

• First write the equation

$\sf 3x-7y$

• x=7
• y=-1
• Now Substitute the values

$\longrightarrow\sf 3 (7)-7 (-1)$

• Simplify

$\longrightarrow\sf 21+7$

$\longrightarrow\sf 28$

Answer 2

Answer:

28

Step-by-step explanation:

3x-7y =3×7-7× -1

=21-(-7)

=21+7

= 28

hope it will help you