Which equation is an identity?
a. 8-(5x+2)=-5x-6
b. 7z+10-z=8z-2(z-5)
c. 8m-4=5m+8-m
d. 6y+5=6y-5
8 answers
When you solve the equations, you will find that when the letters (variables) are eliminated you will be left with a number on each side of the equal sign. If they numbers are the same, you have and identity. If not, it is not an identity.
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its b becuase im smart
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1 answer