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2/5-(7*x)-((1/4)*x) = -141/10 // + -141/10
2/5-(7*x)-((1/4)*x)-(-141/10) = 0
(-1/4)*x-7*x+2/5+141/10 = 0
29/2-29/4*x = 0 // - 29/2
-29/4*x = -29/2 // : -29/4
x = -29/2/(-29/4)
x = 2
x = 2
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