How do you solve properties with rational numbers

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I don't understandand the question 7/10x+20=2/5

Nov 25th, 2014

since 20 does not contain the variable to solve for, move it to the right-hand side of the equations by subtracting 20 from both sides

7x/10 = -20+2/5

simplify the right-hand side of the equation

7x/10 = -98/5

multiple both sides of the equation by 10

7x = -98/5 *10

multiple -98 by 10 get -980

7x = - 980/5

reduce the expression by canceling out the common fractors

7x = -196

divide each term in the equation by 7

x = -28


Amanda L

Nov 25th, 2014

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