Find the solutions of equations 0.4x + 3y = 1.2;7x – 2y =17/6
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Answer:
X = 0.5 or 1/2
Y = 0.33 or 1/3
Step-by-step explanation:
0.4X + 3Y = 1.2
3Y = 1.2 - 0.4X
Y = (1.2-0.4X)/3____(1)
Substitute eqn 1 in other given equation
7X - 2Y = 17/6
7X - 2((1.2 - 0.4X)/3) = 17/6
21X - 2.4 + 0.8X = 17/2
21.8X = 17/2 +2.4
21.8X = 21.8/2
X = 1/2 or 0.5
Y = (1.2 - 0.4*0.5)/3
Y = 1/3 or 0.33
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