Answer:
x = 2(z -y)
Step-by-step explanation:
Multiply by the inverse of the coefficient of x.
x = 4y(z -y)/2y
x = 2(z -y) . . . . . . . . y ≠ 0
_____
The equation is meaningless if y = 0.
a)10%=3560/100=356
5%=356/2=178
30%=356X3=1068
35%=1068+178=1246
b)10% of 40%=3560/4=890
100%890x10=8900(answer)
hope this helps
Scale shows weight = 193
Weight of assistant = 135
Weight of dog = x
x = 193 - 135
x = 58
The dog weighs 58 pounds.
