Question

27:а=5+4,100-у=17+64,а×8=15+9

Answer 1

27 : а = 5 + 4

27 : а = 9

а = 27 : 9

а = 3

100 - у = 17 + 64

100 - у = 81

у = 100 - 81

у = 19

а × 8 = 15 + 9

8а = 24

а = 24 : 8

а = 3

Answer 2

Let's solve the given equations step by step:

Equation 1: 27a = 5 + 4 To find the value of 'a', we'll solve for it: 27a = 9 Dividing both sides by 27: a = 9/27 a = 1/3

Equation 2: 100 - u = 17 + 64 To find the value of 'u', we'll solve for it: 100 - u = 81 Subtracting 100 from both sides: -u = -19 Multiplying both sides by -1 (to isolate 'u'): u = 19

Equation 3: a × 8 = 15 + 9 We already know the value of 'a' from Equation 1, so we can substitute it into the equation: (1/3) × 8 = 24/3 Multiplying 1/3 by 8: 8/3 = 24/3 Both sides are already in the same form, so we can conclude that this equation is true.

Final Results: a = 1/3 u = 19