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3 years ago

What is the value of -3mn+4=-3 when m=2 and n=4?

Mathematics

1 answer:

VLD [36.1K]3 years ago

5 0

The value of –3mn + 4 = –3 when m = 2 and n = 4 is –20

Solution:

Given expression is –3mn + 4 = –3.

To find the value of –3mn + 4 = –3 when m = 2 and n = 4.

⇒ –3mn + 4 = –3

Add 3 on both sides of the equation.

⇒ –3mn + 4 + 3 = –3 + 3

⇒ –3mn + 7 = 0

Substitute m = 2 and n = 4

⇒ –3 × 2 × 4 + 7

Using BODMAS rule first do the multiplication.

⇒ –6 × 4 + 4

⇒ –24 + 4

⇒ –20

Hence the value of –3mn + 4 = –3 when m = 2 and n = 4 is –20.

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