Use the Subtraction Property of Equality to complete the following statement:
if 10x+6=21 then ___=15
a)10x – 6
b)10x
c)10x + 6
d)1.5

Question

Use the Subtraction Property of Equality to complete the following statement:
    if 10x+6=21 then ___=15
a)10x – 6
b)10x
c)10x + 6
d)1.5

blurbendy · Answer

What happens when you subtract 6 from both sides?  What does the equation become?

blurbendy · Answer

I'm referring to the first equation, 10x + 6 = 21

anonymous · Answer

you get d

anonymous · Answer

mind helping me on another on??

blurbendy · Answer

10x + 6 = 21
        -6     -6

10x = 15

I'm not sure if the question is asking you to solve for x though

anonymous · Answer

Which property justifies the following statement? If x=4 and y=3x-11 then y=3x4-11                      A)substitution property of equality.                        b)subtraction property of equality                          c)division property of equality                               D)addition property of equality
i thought it was a but im not sure

anonymous · Answer

and it was i got it right ! thanks !

blurbendy · Answer

Okay, cool

blurbendy · Answer

then y = 3(4) - 11 ?  Is that what the last part says?

anonymous · Answer

yupp

blurbendy · Answer

Okay, since we knew x = 4, all we did was "substitute" that in for x in the other equation.

anonymous · Answer

ok so i was right it was a ! thanks !

blurbendy · Answer

yw!