Solve by the method of substitution
3x+2y=4,4x+5y=21
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4-2y/3=x
4(4-2y/3)+5y=21
16-2y/3+5y=21
16+3y=63
3y=47
y=15.67
X=-27.34
4(4-2y/3)+5y=21
16-2y/3+5y=21
16+3y=63
3y=47
y=15.67
X=-27.34
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