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What is the value of x in the equation 4 x + 8 y = 40, when y = 0.8?
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What is the value of x  in the equation 4

x  + 8 y  = 40, when  y  = 0.8?
User Simon Bartlett
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4x+8y=40 \ |:4 \\\\ x+2y=10 \\\\ x+2*0.8=10 \\\\ x+1.6=10 \\\\ x=10-1.6 \\\\ \boxed{x= 8.4}
User Sadheesh
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