Respuesta :

we have

0.3a + 0.7 = 0.5a - 0.1

solve for a

That means -----> isolate the variable a

step 1

Group terms

0.5a-0.3a=0.7+0.1

Combine like terms

0.2a=0.8

Divide by 0.2 both sides

a=0.8/0.2

a=4

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