Solving 1 Step Equations
Solving Two Step Equations
Solve Multi-Step Equations
Solve Equations with Variables on Both Sides
Grab Bag
100
What is x+5=10
x=5 x+5=10 -5 -5 10-5=5
100
What is x(5)+2=12
x=2 x(5)+2=12 -2 -2 12-2=10 x(5)=10 /5 /5 10/5=2
100
4x+2x-18=24
x=7 4x+2x-18=24 6x-18=24 +18 +18 6x=42 /6 /6 42/6=7
100
Solve 2x+5=-3x-5
x=2 2x+5=-3x-5 -2x -2x 5=5x-5 +5 +5 10=5x /5 /5 x=2
100
What is the error in this equation: x-5=17 -5 -5 x=12
The error is that when you are eliminating 5 from both sides you have to do the inverse and add not subtract.
200
What is x-10=6
x=16 x-10=6 +10 +10 6+10=16
200
What is 4x+3x=28
x=4 4x+3x=28 4x+3x=7x 7x=28 /7 /7 28/7=4
200
9x-2x+14=49
x=5 9x-2x+14=49 7x+14=49 -14 -14 7x=35 /7 /7 35/7=5
200
Solve 10x+4=8x-7
x=-5.5 10x+4=8x-7 -8x -8x 2x+4=-7 -4 -4 2x=-11 /2 /2 x=-5.5
200
x*25=50 -x -x 25=50-x -50-50 -25=-x x=25
You have to divide by 25 and not subtract x because a. this is not a equation where subracting would be the inverse and b. if it was a equation where subtracting was the inverse subtracting x works, but is actrually making more work for you
300
What is -7+x=14
x=21 -7+x=14 +7 +7 14+7=21
300
7x*4=56
x=2 7x*4=56 /4 /4 7x=14 /7 /7 14/7=2
300
4(x+3)=24
x= 4(x+3)=24 4*x=4x 4*3=12 4x+12=24 -12 -12 4x=12 /4 /4 x=3
300
Solve 4x+(2*7)=-14x+18
x=.1 repeated 4x+(2*7)=-14x+18 -4x -4x 2*7=-18x+18 14=-18x+18 -18 -18 -2=-18x /-18 /-18 x=.1 repeated
300
In the equation x*-45=90 what is wrong with the answer being x=2?
When you are dividing 90 by -45 the answer has to be negative because a positive divided by a negative is a negative.
400
What is -4(x)=21
x=-7 -4(x)=21 /-4 /-4 21/(-4)=-7
400
What is 2^3x=72
x=9 2^3x=72 2*2*2=8 8x=72 /8 /8 72/8
400
What is 4+2(6+x)=70
x=4 4+2(6+x)=70 4+2=6 6*6=36 x*6=6x 36+6x=70 -36 -36 70-36=24 6x=24 /6 /6 24/6=4
400
What is 4x(6*2x)=5-3x
x=.025641 4x(6*2x)=5-3x 24x*8x=5-3x 192x=5-3x +3x +3x 195x=5 /195 /195 x=.025641
400
In this equation what is wrong with the answer x=8. x*1/4=-2
The x has to be negative.
500
What is T/-5=-8
T=40 T/-5=-8 *5 *5 -5*-8=40
500
(2^-2)x*4=8
x=8 (2^-2)x*4=8 1/4x*4=8 x/4*4=8 x=8
500
What is (x-3)*(8*1/2)=-20
x=-2 (x-3)*(8*1/2)=-20 8*1/2=4 (x-3)*4=-20 *4 *4 4x-12=-20 +12 +12 4x=-8 /4 /4 x=-2
500
Solve (5.77*10^4)+(x-6)=17x+90,000
x= (5.77*10^4)+(x-6)=17x+90,000 5.77*10^4=57,700 57,000+(x-6)=17x+90,000 -57,000 -57,000 x-6=17x+33,000 -x -x 6=16x+33,000 -33,000 -33,000 -32,994=16x /16 /16 x=-2,062.125
500
What is wrong with the equation: x+(5.89*10^3)=5,895 -5.89*10^3 -5.89*10^3 x=5,895-5.89*10^3
This equation needs to be simplified further by converting the scientific notation to standard numbers.
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