A student who loses a uniform must pay a fee equal to 75% of the school's cost of the uniform. For a uniform that costs the school $105, will the student owe more or less than $75 for the lost uniform? Explain how to use mental math to determine the answer.

a

step-by-step explanation:

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-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

answer is 12345678900987654321234567890987654321

step-by-step explanation:

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116