Answer: x=17 and 17=x. *The answer should have positive sign.*
Step-by-step explanation:
addition property of equality is adding the same number to both sides of an equation does not change the equation.
a+c=b+c
subtraction property of equality is subtracting the same number from both sides of an equation does not change the equation.
a-c=b-c
subtract by 66 both sides of an equation.
4x+66-66=7x+15-66
simplify by equation.
4x=7x-51
subtract 7x both sides of an equation.
4x-7x=7x-51-7x
simplify.
-3x=-51
divide by -3 both sides of an equation.
-3x/-3=-51/-3
simplify.
51/3=17
51/17=3
17*3=51
3*17=51
It changes negative to positive.
x=17
Hope this helps!
Thanks!
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