1.5x + x = 170 how to solve the equation

1.5x + x = 170 how to solve the equation

1.5x+x=170
(1.5+1)x=170
2.5x=170
x=68

How to solve the equation of 5x + 10x + 1 (14-2x) = 79?

5x+10x+1(14-2x)=79
15x+14-2x=79
13x=79-14
13x=65
x=65/13
x=5

How to solve the equation of 10x / 3 = 125-5x?

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/Three means three
10X=375-15X
10X+15X=375
25X=375
X=15
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The solution of the equation 10x-3k-6x about X is between 10 and 20 when k is chosen
10x-3k=4-6x

10x-3k=4-6x
k=16/3x-4/3
Because the solution of the equation 10x-3k = 4-6x about X is between 10 and 20
10≤x≤20
49≤16/3x-4/3≤316/3
therefore
49≤k≤316/3