Answer:
a) and b) satisfied the condition of the given equation.
Step-by-step explanation:
Given: 
≠ 
+ 
Then,
≠ 
a) For a = 21, b = 4 and c = -2, then we have;
≠ 
≠ 
≠ 
≠ 
Therefore the condition of the given equation is satisfied.
b) For a = 1, b = 10 and c = 1, then we have:
≠ 
≠ 
≠ 
Therefore the condition of the given equation is satisfied.
Answer:
8x-6
Step-by-step explanation:
3(x-2)+5x = 3x - 6 +5
-3 i think i used a calculator
Answer:
there are 25 girls more than the boys. indeed, there are 40 girls and 15 boys
Step-by-step explanation:
3/8×40=15
40-15=25
Answer:
2. 3-(-2)-(+5)
⇒3-(-2)-(+5)= 3+2-(+5) = 5-(+5) = 5-5 = <u>0</u>
3. -(-3-6)-(-4+8)
⇒ -(-9)-(-4+8) = 9-(-4+8) = 9-4 =5
4. -8-(-3-2)
⇒ -8-5=-13
5. -(-(-5))+7
⇒ -5+7 = 2
6. -(-(-8)+3)
⇒ -(11) = -11
7. -(-6-(-3+1))
⇒6-(-3+1) = 8
8. 1-(14-(11-7))
⇒ 1-(14-4) = 1-10 = -9
