Câu 1:
a, y x 0.34= 1.19 x 1.2
<=>y x 0.34=1.428
<=>y=4.2
vậy y=4.2
b,0.2 ; y= 1/2 - 4.5
<=>0.2:y=-4
=>y=-0.05
vậy y=-0.05
Câu 1:
\(y.0,34=1,19.1,2\\ \Leftrightarrow y.0,34=1,428\\ \Rightarrow x=4,2\)
Câu 2:
\(0,2:y=\dfrac{1}{2}-4.5\\ \Leftrightarrow0,2:y=-4\\ \Rightarrow y=-0,05\)
Câu 1:
<=>y x 0.34=1.428
<=>y=4.2
vậy y=4.2
<=>0.2:y=-4
=>y=-0.05
vậy y=-0.05
a, y x 0.34 = 1.19 x 1.2
y x 0.34 = 1.428
y = 1.428 : 0.34
y = 4.2
b, 0.2 : y = 1/2 - 4.5
0.2 : y = 0.5 - 4.5
0.2 : y = -4
y = 0.2 : -4
y = - 0.05 ( Vì bn ko cho x thuộc mấy nên tôi lm vậy )