3x + x = 12. Find x
Due to the fact that the two 'x' in the question do not have a power (Are not squared or cubed) they can be added. Thus:4x = 12Then we want to find 'x' so we isolate it in the equation. To do this, we need to divide both sides by 4:(4x)/4 = 12/4Therefore, x = 3
TD
Related Maths 13 Plus answers
All answers ▸There is a right-angle triangle with hypothenus H = 5 cm and side A = 3 cm. Find the length of the third side B using Pythagoras' Theorem.
11(x+3)=121
Eleven pet owners were asked how many pets they had in total. The results are given below. 1, 1, 2, 3, 4, 5, 5, 6, 6, 6, 7 - Two more owners are asked how many pets they have. Including their results the mean goes down to 4 but the mode is unchanged from
Solve the equation: 2x - 3 = 1/2