Answer:
x = 0.5375
Explanation:
=7/20 + 3/16 = x
=LCM = 80
=80×7/20 + 80×3/16 = x × 80
=4×7 + 5×3 = x × 80
=28 + 15 = 80x
=43 = 80x
=43/80 = 80x/80
=43/80 = x
=0.5375 = x.
Sorry but I don't know how to use the slash mark (/).
7/20 + 3/16 = x
x = 7/20 + 3/16
LCM of 20 and 16 = 80
x = 28/80 + 15/80
x = 43 /80
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