exam Maths Puzzle Numerical Ability

Find the value of k for which x=4 is a solution to the equation 3x + k=23. I have an answer of 20=k. I worked it out but unsure of my answer. Thanks very much for looking at this problem.

Read Solution (Total 0)

exam Other Question

the perimeter of a triangle is 41 cm. the measure of the shortest side is 7 cm less than the middle side. the measure of the longest side is 5 cm less than the sum of the other 2 sides. find the lengths of the sides. a man born on the 1st century will be x years old in x to the power 2 AD.Find his year of birth.