X + 16
x= 4
substitute and solve
4 +16 = 20
20
-7 +3 = ?
-4
When the signs are the same in multiplication & division the answer will be:
a. negative -2 X -3 = -6
b. Doesn't matter
c. positive -2 X -3 = +6
c. positive -2 X -3 = +6
X - 3 = 10 What do you do to to get rid of the - 3.
a. Do the opposite, subtract 3 on both sides
b. Do the opposite, add 3 on both sides
c. Ask it politely to leave.
b. Do the opposite, add 3 on both sides
X -3 +3 = 10 + 3
x = 13
3x = 12
What do you do to to get rid of the 3?
a. Do the opposite, multiply by 3 on both sides.
b. Do the opposite, divide by 3 on both sides.
c. Ask it to politely leave.
b. Do the opposite, divide by 3 on both sides.
3/3 x = 12/3
x= 4
14 - X
x = 4
14 - 4 = 10
10
-4 + 6 = ?
2
5x = 25
5X /5 = 25 /5
X = 5
X - 3 = 14
17
8X = 24
8X /8 = 24/8
x = 3
4N
N = 5
4 x 5 = 20
20
-3 - 1 = ?
-4
X/3 = 7
X/3 x 3 = 7 x 3
X = 21
X + 9 = 2
-7
X/15 = 2
X/15 x 15 = 15 x 2
X = 30
15 - X
X = 11
15 - 11 = 4
4
When you subtract integers the sign in the answer will be:
a. The sign of the smaller number in the problem.
b. The sign of the bigger number in the problem.
c. Sign doesn't matter.
b. The sign of the bigger number in the problem.
4X = 16
4X/4 = 16/4
X = 4
B - 7 = 5
12
6X = 36
6X /6 = 36/6
X = 6
12/X
X = 4
12/4 = 3
3
10 - (-3) =
13
X/3 = 4
X/3 x 3 = 4 x 3
X = 12
X + 12 = 22
10
10X = 230
10X /10 = 230/10
x = 23