If 8x+5(3+x)−a=15+5x, then what is a?
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Answer:
Required value of a is 8x.
Step-by-step explanation:
Given equation is 8x + 5( 3 + x ) - a = 15 + 5x
= > 8x + 5( 3 ) + 5( x ) - a = 15 + 5x [ Opening brackets ]
= > 8x + 15 + 5x - a = 15 + 5x
= > 8x + 5x + 15 - a = 15 + 5x [ collecting like terms ]
= > 13x + 15 - a = 15 + 5x
= > 13x + 15 - a - 15 = 15 - 15 + 5x [ Adding - 15 on both sides ]
= > 13x - a = 5x
= > 13x - a - ( 5x - a ) = - 5x - ( 5x - a ) [ Adding - ( 5x - a ) on both sides ]
= > 13x - a - 5x + a = - 5x - 5x + a
= > 13x - 5x = a
= > 8x = a
Hence the required value of a is 8x.
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