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