exam Maths Puzzle Numerical Ability

one number plus six times that number equals 133 find the number

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exam Other Question

Of the drivers who stop at a gas station, 90% purchase gasoline, and 6% purchase both gasoline and oil. A total of 9% purchase oil.

(a) What is the probability that a driver Can someone help me with these, please?

1) squrt y+7=2

2) squrt 5x+5-5=0

Thanks!!!! :)