Answer:
Step-by-step explanation:
4
For example long division of 30 by 2 first 2 divided by 3 is 1 put it down then multiply 1 by 2 and subract then just repeat
Step-by-step explanation:
5x-6+7x+18=180
12x=180+6-18
12x=168
168÷12=14
X=14
for y
3y+11=7x+18(7×14+18)
3y+11=116
3y=116-11
3y=105
y= 35
Step-by-step explanation:
1)ab-c
=2(3)-4
=6-4
=2
2)6c-2b
=6(4)-2(3)
=24-6
=18
3)a+b-c+5
=2+3-4+5
=10-4
=6
5)7c-2a
=7(4)-2(2)
=28-4
=24
That's false.
Let's see an instance:
10% of 300=30
20% of 100=20
It doesn't work here so it's false