Answer 他妈的你，你这个笨蛋，答案是三个Step-by-step explanation:
Answer:
Step-by-step explanation:
6x + 3y = -18
Taking 3 common from left side
so, 3(2x+y) = -18
2x+y = -18/3
2x+y = -6 (equation 1)
and, 7x + 7y = 0
Taking 7 as commom from left side
7(x + y) = 0
x + y = 0/7
x + y = 0 (equation 2)
now , by using elimination method
subtracting equation2 from equation1
2x + y - (x + y)= -6 - 0
2x + y - x - y = -6
x = -6
so, x = -6
substituting value of x in equation 1
2(-6) + y = -6
-12 + y = -6
y = -6 +12
y = 6
hence, the value of x = -6
and value of y = 6
5y-7 is algebraic expression is a difference with two terms.
Hence Option A is correct.
Step-by-step explanation:
We need to identify which algebraic expression is a difference with two terms.
An algebraic expression is a difference with two terms means that the two terms in an expression is separated by negative sign.
So, from the options given the term is 5y-7
In all other options given, there is no other expression that represent the difference of two terms.
So, 5y-7 is algebraic expression is a difference with two terms.
Hence Option A is correct.
Keywords: Algebraic Expressions
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