Question

2x- 3.5= 5.9

cíu t với

Answer 1

2x-15=45
2x=45+15=60
x=60/2=30

Answer 2

\(2x-3\cdot5=5\cdot9\)

\(2x-15=45\)

\(2x=45+15\)

\(2x=60\)

\(x=60:2=30\)

Answer 3

\(2x-3,5=5,9\\ 2x=5,9+3,5\\ 2x=9,4\\ x=9,4:2\\ x=4,7\)