Answer:
corresponding value of equal matrix is equal
a=10
b= -6
c=3
Step-by-step explanation:
<u>answer:</u> 
<u>work:</u>
| distribute the negative into the parentheses, which means multiply into the parentheses.
| combine like terms
| final answer
correct me if anything is wrong, otherwise hope this helps! ❤ from peachimin
Answer:
500 people took the survey.
Step-by-step explanation:
12 divided by 3 is 4 and 15 divided by 3 is 5. that means 4 of every 5 people prefer restaurants. Multiply that by 100 and you get 400 of every 500 people prefer restaurants. Hope this helps!
85÷(9×5)-(10×4)
85÷(45)-(40)
85/5
17
I think I did this right....
Let's solve your equation step-by-step.
−
2
x
+
5
=
21
Step 1: Subtract 5 from both sides.
−
2
x
+
5
−
5
=
21
−
5
−
2
x
=
16
Step 2: Divide both sides by -2.
−
2
x
−
2
=
16
−
2
x
=
−
8
Answer:
X=-8
Step 1: Add 2y to both sides.
−
7
x
−
2
y
+
2
y
=
15
+
2
y
−
7
x
=
2
y
+
15
Step 2: Divide both sides by -7.
−
7
x
−
7
=
2
y
+
15
−
7
x
=
−
2
7
y
+
−
15
7
Answer:
x
=
−
2
7
y
+
−
15
7
