Answer:
The sign should be negative ( - )!
Step-by-step explanation:
-4 - 8 = -12
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Answer:
7x + 15x= 21x
Step-by-step explanation:
7x + 15x
= (7 + 15)x
= 22x
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X +(-5y)= 13
-x+ 9y =(-17)
0+<u>4y</u>=<u>-4</u>
4 4
y=1
x+-5(1)=13
x-5=13
+5 <u>+5
</u> x=18
y=1
Answer:
Step-by-step explanation:
We need to solve
We know that,
Using the above formula,
So, the final answer is .