**Evaluate the expression, given x = -2, y = 3, and a = -4.**

**
**2a – 7y – 4x

**Solution**

**Put all values**

2(-4)-7(3)-4(-2)

= -8-21+8

= -21

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# ProblemĀ 448

learn maths and leave the fear of it

**Evaluate the expression, given x = -2, y = 3, and a = -4.**

**
**2a – 7y – 4x

**Solution**

**Put all values**

2(-4)-7(3)-4(-2)

= -8-21+8

= -21