Other than a calculator:
The easiest way is to start by multiplying 26 by 10...you just add a 0 to 26 to get 260.
Then, since you want to multiply 26 by 14, but you've already multiplied 26 by 10, you need to now multiply 26 by 4 (fourteen minus ten is 4). Which is..104. Add this number to the number you got by multiplying 26 by 10, and you get a total of 364.
After doing this several times, you get the hang of it...I did that all in my head, for instance.
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- 2x - 14 = 26 Switch all signs: 2x + 14 = - 26 Subtract 14 from both sides: 2x = -26 - 14 = - 40 Divide both sides by 2: x = - 40/2 = - 20
x+3=14 x+3-3 = 14-3 (subtract 3 from both sides to solve for x) x = 11
why will the equations x+14=37 and x-14=37 have different solutions for x
To solve for x means to find the value of an unknown number. For instance, in the equation x+14=23, the value of x is 9 because 9 is the number that needs to be added to 14 in order to reach the number 23.
X + 11 = 37. subtract 11 from both sides; X = 37 - 11 = 26.