The inequality is .
Apply Addition property of inequality: Add 1.4 to each side.
\
(Apply additive inverse property:
)
(Apply additive identity property:
)
(Add:
)
(Divide each side by 0.5)
(Cancel common terms)
(Divide:
)
Graph the solution set on a number line.
Note: A dot means that this point is included in the solution set.
Check:
\To check, substitute a number less than or equal to 7 in
(Substitute
)
(Multiply:
)
(Subtract:
)
The inequality is true.
The inequality solution is .