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shepuryov [24]
4 years ago
6

0.02x + 0.10(400-x) = 0.42x can someone help me solve this I’ve been having different answers thanks

Mathematics
1 answer:
ArbitrLikvidat [17]4 years ago
6 0
Simplify the left side. 0.02x+(40-0.1x)=0.42x 
-0.08x+40=0.42
since 0.42x contains the variable to solve for, move it to the left side of the equation by subtracting 0.42x from both sides 
-0.08x+40-.0.42x=0
-0.5x=-40 
x=80
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