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The solid figures that have only base are cones and pyramids.
Hope this helps :)
2x-2/8-3x/5 =55/4 distributive property of multiplication over subtraction
(10x-3x)/5-1/4=55/4 combining like terms
7x/5-1/4+1/4=55/4+1/4 addition propriety of equality
7x/5=56/4 add fractions
X=5•56/7•4=280/28=10
Five eights or 5/8 ( Hope This Helped)
You would need to add 36 to both sides to complete the square.
This is because you take half of the x term and then square it.