A running club has 90 members. 42 of them take part in half marathons.
28 of them take part in full marathons.
35 of them do not take part in any races.
Fill in the Venn diagram.
€
Н
F
E = club of 90 members
H = half marathons runners
F = full marathon runners
o
35​

27, 15, 13

Step-by-step explanation:

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116