Step-by-step explanation:
Put the values of x = 6, y = -7 and z = 0.8 to the expressions:
a) 5x → 5(6) = 30
b) 3y → 3(-7) = -21
c) 10z → 10(0.8) = 8
Answers:
a) 5x=5(6)=30
b) 3y=3(-7)=-21
c) 10z=10(0.8)=8
Using the substitution method
