How would you solve for x? x + (x*2.5) = 70?

x + (x*2.5) = 70How would you solve for x? Steps please? or:x + (x*2.5) = 70How would you solve for x? Steps please?or:Recall for any (real) numbers a

x + (x*2.5) = 70

How would you solve for x? Steps please?

or:x + (x*2.5) = 70How would you solve for x? Steps please?


or:Recall for any (real) numbers a, b and ca*(b + c) = (a*b) + (a*c)For example if a=2, b=3, and c = 5 a*(b+c) = 2*(3 + 5) = 2*8 = 16(a*b) + (a*c) = (2*3) + (2*5) = 6 + 10 = 16Since we easily see thatx+ (x*2.5) = 70is the same as(x*1)+(x*2.5) = 70Using the above rule we see that this is the same asx*(1+2.5) = 70Simplifying we havex*3.5 = 70dividing by 3.5 on both sides we getx = 70/3.5 = 20


or:Well x is a letter that symbolises something. Let's think of it as if it were a physical problem. Say, calculate the weight of a potato.1 Potato + 2. 5 potato = 70 gramsSo 3.5 potatoes = 70 gramsSo now we divide both terms by 3.51 potato therefor weights 20 grams.Now in your math class we have abstracted this. So we use X, because as long as the equation holds true it will be 20.1 x + 2.5 x = 70(1+2.5) x = 70x = 70/(3.5)X= 20

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