1.3/4-(0.7-2.1/2×X)=1.17

Question

1.3/4-(0.7-2.1/2×X)=1.17

Answer 1

1,75-(0,7-2,5х)=1,17
1,75-0,7+2,5х=1,17
1,05+2,5х=1,17
2,5х=1,17-1,05
2,5х=0,12
х=0,12/2,5
х=0,048