Question

write five solution for 3x+2y=7
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Answer 1

Step-by-step explanation:

3x+2y=7

3x=7-2y

x=7/3+(-2/3)y

Answer 2

$(i) \: 3x + 2y = 7 \\ 3 \times 1 + 2y = 7 \: ( x = 1) \\ 3 + 2y = 7 \\ 2y = 4 \\ y = 2$

$(ii) \: 3x + 2y = 7 \\ 3 \times 2 + 2y = 7(x = 2) \\ 6 + 2y = 7 \\ 2y = 1 \\ y = \frac{1}{2}$

$(iii) \: 3x + 2y = 7 \\ 3 \times 3 + 2y = 7(x = 3) \\ 9 + 2y = 7 \\ 2y = - 2 \\ y = - 1$

$(iv) \: 3x + 2y = 7 \\ 3 \times 4 + 2y = 7(x = 4) \\ 12 + 2y = 7 \\ 2y = - 5 \\ y = \frac{ - 5}{2}$

$(v) \: 3x + 2y = 7 \\ 3 \times ( - 3) + 2y = 7(x = - 3) \\ - 9 + 2y = 7 \\ 2y = 16 \\ y = 8$