118
kk
kk
k Solving Linear Equations with Three Unknowns
Example To solve the following linear equations for x, y, and z:
4x + y –2z = –1
x +6y +3z =1
–5x +4y + z = –7
While in the Linear Equation Mode (SIML), press 2 (3), because the linear equa-
tions being solved have three unknowns.
2(3)
Input each coefficient.
ewbw-cw
-bw
bwgwdwbw
-fwewbw
-hw
Each time you press w, the input value is registered in the highlighted cell. Each
press of w inputs values in the following sequence:
coefficient
a1 ! coefficient b1 ! coefficient c1 ! coefficient d1 !
coefficient
a2 ! coefficient b2 ! coefficient c2 ! coefficient d2 !
coefficient a3 ! coefficient b3 ! coefficient c3 ! coefficient d3
• You can input fractions and value memory contents as coefficients.
After inputting the coefficients, solve the equations.
1(SOLV)
1 23456
1 23456
7 - 2 Linear Equations with Two to Six Unknowns
Highlighted solution cell value
Value being input into highlighted cell
Coefficient input cells
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