Answer:
Step-by-step explanation:
divide by x-a
Experimental, a 7 out of 40 chance, add all of the results together and take the result of the diamond and fraction it with the whole like this 7/40, 31/40, much the same as b, 0/40 chance, because there is no stare in the cards.
Answer: 10x-30=90 I think 10x=90-30, 10x=60, x=60/10, x=6
Step-by-step explanation: