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order of operations
one-step equations
two-step equation
two-variable equations
writing equations
100
5(3-19)+4
what is -76
100
15+x=105
What is x=90
100
4x-6=-30
What is -6
100
y=19x+3 if x=2
What is y=41
100
a number times by three is less than ninty
What is 3n<90
200
15+20(50-29)+2
What is 437
200
x+19=4
What is -15
200
77-2x=45
What is 61
200
y=14x-(-5) if x=5
What is y=-75