Download Solving Simple Linear Equations

Solving Simple Linear Equations
Solve the following equation for y:
simple linear Page 1
Solve the following equation for x:
-in solving an equation that contains fractions, the
best just step is almost always to multiply the
entire equation by the smallest common multiple of the denominators so that it becomes an equation
with no fractions
here: the denominators are:
N7
12=22.3
so, the smallest common multiple is
22.3-7= 84
then multiply:
]
•2.3-7
→ziox-132x=252+35x
this is now quite an easy equation to solve:
210x-132x-35x2=252
43x=252
4=252 (E 5.860465116) 43
to check:
its: Ex 15=35 (2,534-7" (¥53) = '860-3?' it
= 234
RHS = 3t 5
*3=3234
Since this solution makes LHS RAs, the solution is confirmed. you could also clothe check with the decimal value, butter, use the full precision of
your calculator.
do not do any preliminary rounding!
Is ¥ 5.860465116. store in
IHS = Ix IX * 5.441860465
RHS = 37 % x I 5.441860465
simple linear Page 2
RHS = 37 % x I 5.441860465
LHS = RHS 80 solution is verified
Is you round-of the valued X you use in the
check too much, then when CHS is not quite the
same as RHS, you can't tell if the disagreement
is due to your rounding or because your solution
is incorrect. N you use the fuel precisions your
calculator for the check, the disagreement
between the valued the LHS and RHS should be at most in the last one or two significant digits when your solution is correct.
memory
equal
Solve the following equation for w:
simple linear Page 3
simple linear Page 4