Multistep-Expressions
4x - 3(x - 2 ) = 21
x=15
- 5/3r - 2r = - 11/9
r= 1/3
3x = 2x + 2
x=2
2 (x + 3) + 4 = 3x + 5
2x + 3 + 4 = 3x + 5
2x + 7 = 3x + 5
7 = x + 5
x = 2
Did not Distribute properly. 2 * 3 is 6 not 3
Why didn’t the skeleton cross the road?
He didn’t have the guts!
- (x - 5) + - x = 3
x = 1
-2r + 1/3 - 5/2r = -25/6
r=1
3x + 8 = 2x +10
x=2
4(x + 7/2) = 2(3x + 5)
4x + 7 = 6x + 10
7 - 10 = 6x - 4x
-3 = 2x
x = -3/2
What is the first step to solve the following equation?
1/4(12x + 16) = 10-3(x - 2)
Remove the parenthesis by DISTRIBUTING.
.2 (10t - 4) - t = 1.2
t=2
8/3x + 3/2 + 2/3 = - 23/6
x= - 9/4
2(3x+4)+5x=4(x+8)+3x
x=6
4x + 5 + 3x = 9x + 2 7x + 5 = 9x +2 7x = 9x + 7 -2x = 7 x = -3.5
Did not subtract correctly, -5 on both sides
A witch draws two lines: y=3x+2 and y=3x−4 What’s true about their slopes and y-intercepts?
Same slope (parallel), different y-intercepts.
-1/7 (x - 7) + 22 = 26
x=-21
- 5/2 a + 4/3 + 2/3 = 13/4
a= - 1/2
(2x - 9)/3 = 8 - 3x
x=3
6 -(x - 4) = 7x + 12
6 -x - 4 = 7x + 12
-x + 2 = 7x + 12
10 = 6x
x = 5/3
Did not Distribute the - correctly
You start with 20 candies but lose 2 each house. Write an equation for candies left after x houses.
y=−2x+20
3 - 0.25x = -1/2x + 9
x=24
-5/3 n + 4/3 + 3/4 = 19/ 4
1/2 (2n + 6) = 5n - 12 -n
n=5
3/2 (2x - 4) - 1/3 (3x- 6) = 5
3x - 6 - (x - 6) = 5
3x - 6 - x + 6 = 5
2x = 5
x = 5/2
Did not Divide correctly 1/3(3x-6) -->x-2
If your teacher gave out 5 candies for every correct problem you solved and you started with 10 candies, what’s your equation — and how many candies do you have after 4 correct problems?
30 candies