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seropon [69]
3 years ago
7

What is the value of x when 2x+3=3x-4

Mathematics
2 answers:
fgiga [73]3 years ago
7 0
2x+3=3x-4 \ \ \ |-3x \ \wedge \ -3 \\  \\ -x=-7 \\  \\ x=7
slavikrds [6]3 years ago
6 0
2x+3=3x-4
try to isolate the x term
you must do the same thing to both sides or else it won't be equal anymore

2x+3=3x-4
add 4 to both sides
2x+3+4=3x+4-4
2x+7=3x+0
subtract 2x from both sides
2x-2x+7=3x-2x
0+7=x
7=x

the answer is x=7
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\begin{array}{l}{\text { Then, } \frac{a \times 6 \times 1}{100}+\frac{3 a \times 4 \times 1}{100}=\$ 144} \\\\ {\frac{6 a}{100}+\frac{12 a}{100}=144} \\\\ {\frac{6 a+12 a}{100}=144} \\\\ {\frac{18 a}{100}=144} \\\\ {18 a=14400} \\\\ {a=14400 \div 18}\end{array}

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