Question

Answer These Three Questions with detailed solutions to all 3 expressions.


6x + 5y - 3z x = 2, y = 3, z = 5

6x + 5y - 3z x = 3.2, y = 0.9, z = 2.4

6x + 5y - 3z x = -2, y = -5.1 z = 3.4

Answer 1

6x + 5y - 3z
= 6(2) + 5(3) - 3(5)
= 12 + 15 - 15
= 12

6x + 5y - 3z
= 6(3.2) + 5(0.9) - 3 (2.4)
= 19.2 + 4.5 - 7.2
= 23.7 - 7.2
= 16.5

6x + 5y - 3z
= 6(-2) + 5(-5.1) - 3(3.4)
= (-12) + (-25.5) - (10.2)
= (-12) - 25.5 - 10.2
= (-12) - 15.3
= -27.3