Question

How do you find 4x − 2y − z, if x = 2, y = 3, and z = −10?

Answer 1

4(2)-2(3)+10

8-6+10

2+10

12

Answer 2

4x - 2y - z

put the values of x, y ,z

=4×2 -2×3 - (-10)

= 8 - 6 + 10

= 18-6

=12