To solve an equation we have to do the order of operations backwards.
When solving a 2 step equation we always do adding or subtracting first.
Add- plus, the sum of, increased by, total, more than, and added to.
Subtraction- minus, difference of, decreased by, fewer than, less than, subtracted from.
Multiplication- times, the product of, multiplied by, or of
Division- divided by, the quotient of, or per
Inequality- a statement formed by placing an inequality symbol between 2 expressions
Solution of an Inequality- is the set of numbers that you can subsitute for thevariable to made the inequality true.
We reverse the inequality symbol when you multiply or divide with negatives
x+ 24= 31 y = 14
31-24= 7 9 7+24=31 life is good Check
x=7
14 • 9= 126 y = 14
9
x= 126
Check 126 = 14 Life is good
9
-3a=81 -3a81
-3 -3
a= -27
Check:
-3(-27)=81
81=81 Life is good
c-12=26
+12 +12
c = 38
Check:
38-12=26
26=26 Life is good
2x+10=46 -10 -10 2x36
2 2
x= 18
Check
2• 18+10=46
36+10= 46
46=46 life is good
x-14 < 35 +14 +14
x < 49
Check
49-14 < 35
35<35 life is good
When solving a 2 step equation we always do adding or subtracting first.
Add- plus, the sum of, increased by, total, more than, and added to.
Subtraction- minus, difference of, decreased by, fewer than, less than, subtracted from.
Multiplication- times, the product of, multiplied by, or of
Division- divided by, the quotient of, or per
Inequality- a statement formed by placing an inequality symbol between 2 expressions
Solution of an Inequality- is the set of numbers that you can subsitute for thevariable to made the inequality true.
We reverse the inequality symbol when you multiply or divide with negatives
x+ 24= 31 y = 14
31-24= 7 9 7+24=31 life is good Check
x=7
14 • 9= 126
y = 14
9
x= 126
Check
126 = 14 Life is good
9
-3a=81
-3a 81
-3 -3
a= -27
Check:
-3(-27)=81
81=81 Life is good
c-12=26
+12 +12
c = 38
Check:
38-12=26
26=26 Life is good
2x+10=46
-10 -10
2x 36
2 2
x= 18
Check
2• 18+10=46
36+10= 46
46=46 life is good
x-14 < 35
+14 +14
x < 49
Check
49-14 < 35
35<35 life is good
-6y>-96
-6 -6
y<16
-6•14>-96
-84>-96