Answer:
30 items are sold there
Step-by-step explanation:
21/0.7 --> 210/7=30
Steps:
(x-2)=4x
Pretend that there is a one in front of x-2
1(x-2)=4x
Multiply the bracket by 1
x-2=4x
Move x to the other side .Whenever you move a number or letter the sign changes.
x-x-2=4x-x
-2=3x
Divide by 3 for -2 and 3
-2/3=3/3 x
x=-2/3
Check answer by using substitution method
(-2/3-2)=4(-2/3)
(-2/3-6/3)=-8/3
-8/3=-8/3
Answer is -2/3
Solve
1
Multiply the numbers
1
2
−
3
⋅
3
−
2
1
2
−
9
−
2
2
Add the numbers
Solution:
1
Answer:
m∠ADC = 90°
5x-5 = 90
x = 19
Step-by-step explanation:
Answer:x=-8
Step-by-step explanation:
12(x/4+2/3)=12(x/6)
3x+8=2x
3x-2x=-8
x=-8
