Question

Can you explain 3x+4/5=7/10. Solve

Answer 1

`3x+ (4)/(5)= (7)/(10) \\ \\3x= (7)/(10)-(4)/(5)\\ \\3x=(7)/(10)-(8)/(10)\\ \\3x=- (1)/(10) \ /:3\\ \\x=-(1)/(10)\cdot (1)/(3)\\ \\x=-(1)/(30)`

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`(3x+4)/(5) = (7)/(10) \\ \\10(3x+4)=5\cdot 7\\ \\30x+40=35\\ \\30x=35-40\\ \\30x=-5\ /:30\\ \\x=- (5)/(30) \\ \\x=-(1)/(6)`

Answer 2

`3x+ (4)/(5)= (7)/(10)\ \ | -(4)/(5)\\ \\3x+ (4)/(5) -(4)/(5)= (7)/(10)-(4)/(5)\\ \\3x = (7)/(10)-(8)/(10) \\ \\3x = -(1)/(10) \ \ /*(1)/(3)\\ \\x=-(1)/(30)`




`or \\ \\ (3x+ 4)/(5)= (7)/(10) \ \ /*10 \\ \\ 2(3x+4)=7\\ \\6x+8 = 7\ \ |-8`


`6x+8-8=7-8\\ \\6x=-1\ \ /:6 \\ \\ x=-(1)/(6)`