Question

If a=5,b=-4 and c=-3,what is the value of 2a-6b+3c? _____

Answer 1

We are given that:

• a = 5
• b = -4
• c = -3

Given the expression:

$\displaystyle \large{2a - 6b + 3c}$

Evaluate the expression by substituing the given values in.

$\displaystyle \large{2(5)- 6( - 4)+ 3( - 3)} \\ \displaystyle \large{10- ( - 24)+ ( - 9)}$

Simplify the expression.

• Negative × Negative = Positive
• Negative × Positive = Negative

$\displaystyle \large{10 + 24 - 9} \\ \displaystyle \large{34- 9} \\ \displaystyle \large \boxed {25}$

Therefore, the value of the expression is 25.

Answer 2

2 (5)-6(-4)+3(-3)

10-24-9

=25