(1970+x)*0.4=20*x

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Solution for (1970+x)*0.4=20*x equation:



(1970+x)*0.4=20x
We move all terms to the left:
(1970+x)*0.4-(20x)=0
We add all the numbers together, and all the variables
(x+1970)*0.4-20x=0
We add all the numbers together, and all the variables
-20x+(x+1970)*0.4=0
We multiply parentheses
-20x+0.4x+788=0
We add all the numbers together, and all the variables
-19.6x+788=0
We move all terms containing x to the left, all other terms to the right
-19.6x=-788
x=-788/-19.6
x=40+4/19.6

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