Question

Solve for x: x + 15 = 45 Question 1 options: 30 60 -60 -30

Answer 1

Answer: A. 30. x=30/ 30=x *The answer should be the positive sign.*

Step-by-step explanation:

subtraction property of equality is subtracting the same number from both sides of an equation does not change the equation.

a-c=b-c

addition property of equality is adding the same number to both sides of an equation does not change the equation.

a+c=b+c

subtract by 15 both sides of an equation.

x+15-15=45-15

simplify.

45-15=30

30+15=45

45-30=15

x=30 and 30=x

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