to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.
x-1/3(3x-9) = -3 since y=3x-9 substittute y.
x-1/3(3x-9)=-3
x + x +3 = -3
2x+3=-3
2x+3-3= -3-3
2x=-6
x=-3
substitute again into y=3x-9
y=3(-3)-9
y=-9-9
y=-18
Answer from: Quest
Idon't know what's the answer lol
Answer from: Quest
A: 18/15b : 7 - -8 = 15 , 12 - -6 = 18 the y variable always goes over the x variables, c : same thing a
Answer from: Quest
hence, the required result is
step-by-step explanation:
suppose we have two matrices a and b
we will assume the two matrices
we have to compute b-a which means subtracting corresponding elements of a from b.
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