solve the following equations : - a). 3x + 9 = 30 b). K/4 - 3 = 7 with full explanation
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3x+9=30
3x=30-9
3x=21
X=21/3
X=7
K/4-3=7
K/4=7+3
K/4=10
K=10×4
K=40
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given above is answer check it
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