Question

2•{12+3•[60-3•(27-4•3)]}-5×=7

Answer 1

2•{12+3•[60-3•(27-4•3)]}-5x=7
2•[12+3•(60-3• 15)]-5x=7
2•[12+3(60- 45)]-5x=7
2•(12+3•15)-5x=7
2•57-5x=7
144-5x=7
-5x= -144+7
-5x= -137 | : (-5)
x= 137/5

Answer 2

2•{12+3•[60-3•(27-4•3)]}-5x=7
2•{12+3•[60-3•(27-12)]}-7=5x
2•{12+3•[60-3•(15)]}-7=5x
2•[12+3•(60-45)]-7=5x
2•(12+3•15)-7=5x
2•(12+45)-7=5x
2•57-7=5x
114-7=5x
107=5x
x=107/5