8
Split it into two parts, solve each part as if it had an "=" sign instead of an inequality. Ex: -6<3x+2<12 -6<3x+2; -8<3x; -8/3<x Other side-- 3x+2<12; 3x<10; x<10/3 Then put them back together. -8/3<x<10/3 *Make sure you remember to switch the direction of the inequality symbol if you are dividing by a negative number.*
8x = 16 is NOT an 'Inequality#'. However, 8x > 16 is an inequality as is 8x > 16 . NB Treat inequalities as an 'equals'. except for negative numbers or fractions. Hence 8x > 16 Divide both sides by '8' x > 2 Similarly 8x < 16 x < 2
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104
b -8
It's just like solving algebra: [(J/4)-8] < (4) (J/4) < (12) (J) < (12*3) J < 48 The inequality is true when J is less than 48.
-8
x>5
8
Split it into two parts, solve each part as if it had an "=" sign instead of an inequality. Ex: -6<3x+2<12 -6<3x+2; -8<3x; -8/3<x Other side-- 3x+2<12; 3x<10; x<10/3 Then put them back together. -8/3<x<10/3 *Make sure you remember to switch the direction of the inequality symbol if you are dividing by a negative number.*
Yes
4mn + 8 is an expression: it is not an equation (or inequality) and therefore there is nothing that can be solved.
0.8 = 8/10 = 4/5
y/4 = 10/8 Multiply both sides by 4:- y = 40/8 y = 5
The fraction 8/10 is equal to 4/5. To solve, divide the numerator and denominator of 8/10 by 2. 8/2=4, 10/2=5 as such (8/10)/2=4/5 It is also equal to 16/20, 32/40, 64/80, 80/100 and so forth.
If 5x + 8 = -7 then x = -3 ! -3 x 5 = -15 -15 + 8 = -7 !