Solve the following systems of simultaneous equations, using the substitution method. (a) (b) Solving (4.27) for y,

Solve the following systems of simultaneous equations, using the substitution method.

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(a) (b) Solving (4.27) for y, 12x-7y = 106 8x + y = 82 y = 82-8.x Substituting the value of y from (4.28) into the other equation (4.26), - 12x 7(82 8x) = 106 12x 574+ 56x = 106 - Then substituting x = 10 in (4.26) or (4.27), x = 10 12(10) 7y 106 - y = 2 5x + 24y = 100 7x - 15y=-103 Solving (4.29) for x, 5x = 100 - 24y x = 20 - 4.8y (4.26) (4.27) (4.28) (4.29) (4.30) (4.31)