-10(-12+30)
-10 multiplied by 18
-180
<span>2r/5+7r/15=
LCM=15
(15\5=3*2r=6r)
15\15=1*7r=7r
answer=6r+7r\15
answer=13r\15</span>
Answer:
The expressions are equivalent
Step-by-step explanation:
We can start by simplifying the first expression:
1.25x+4+0.75x-3
Move like terms so that they are together:
1.25x+0.75x+4-3
Now, combine like terms:
2x+1
The expressions are equivalent
Answer:
A , and C
Step-by-step explanation:
A. 2.3+(-2.3) ➡ 2.3 -2.3 = 0 so this option is correct
B.-3.7+(-4.1) ➡ -3.7 - 4.1 = -7.8 so this option isn't correct
C.-2.6-(-12/4) ➡-2.6 + 3 = 0.4 this option is also correct
D. (5/2)+(-2.5) ➡ 5/2 -5/2 = 0 this one would be undefined because we can't divide 0 by 2 or any other rational numbers
E.72-(-100) ➡72+100= 172 is positive not negative therefore this option is incorrect
