Yes, because there are common factors in the equation. therefore showing you can group
This is a linear equation, and it is solved for finding the value of x.
2x - 5 = -20
now simple number -5 goes to the other side of equation and turns into +5, then the equation becomes
2x = -20 +5
now we get 2x = -15
because -20 + 5 = -15, greater number is 20 then 5 and 20 is with - sign.
the next step is x = -15/2
in 2x, 2 is multiplying with x when it goes to the other side of equation 2 will be divided with -15, that's why we get
x = -15/2
which is the value of x
Step: Solve
−
3
x
+
3
y
=
9
for x:
−
3
x
+
3
y
=
9
−
3
x
+
3
y
+
−
3
y
=
9
+
−
3
y
(Add -3y to both sides)
−
3
x
=
−
3
y
+
9
−
3
x
−
3
=
−
3
y
+
9
−
3
(Divide both sides by -3)
x
=
y
−
3
Step: Substitute
y
−
3
for
x
in
2
x
−
7
y
=
−
14
:
2
x
−
7
y
=
−
14
2
(
y
−
3
)
−
7
y
=
−
14
−
5
y
−
6
=
−
14
(Simplify both sides of the equation)
−
5
y
−
6
+
6
=
−
14
+
6
(Add 6 to both sides)
−
5
y
=
−
8
−
5
y
−
5
=
−
8
−
5
(Divide both sides by -5)
y
=
8
5
Step: Substitute
8
5
for
y
in
x
=
y
−
3
:
x
=
y
−
3
x
=
8
5
−
3
x
=
−
7
5
(Simplify both sides of the equation)
Answer:
X=-7/5 and y= 8/5
Step-by-step explanation:
sleeping in class ? :-)
these are our pure definition questions.
9. false
if the data was only defined for whole numbers, then that would be the only case, where that is true. but then, there would be no rounding.
the "significant figures" are the decimal places after the decimal point.
rounding it to one significant figure means rounding it to the first position after the decimal point.
10. True
see 9. for more details.
