exam Maths Puzzle Numerical Ability

-4-(3+6m)=1/2(4+2m)

Not in a text book. Not sure what to do when you subtract for the distributive property Im used 2 multiplication equations. Can you show all steps to help me?

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exam Other Question

Science and medicine. Celsius temperature readings can be converted to Fahrenheit readings using the formula
F= 9/5C+32

What is the Fahrenheit temperature that corresponds to
Solve by substitution.
38.) 10x + 2y = 7
y = -5x +3