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r + 11 + 8r = 29
v = -6
- 29 = - 4 = 5uadd 4 to each side- 29 + 4 = - 4 + 4 + 5u- 25 = 5udivide both sides integers by 5- 25/5 = (5/5)u- 5 = u========check in original equation- 29 = - 4 + 5(- 5)- 29 = - 4 - 25- 29 = - 4 + (- 25)- 29 = - 29=============checks
If I read right, then r= 4.5, so that (4)(4.5)(2)-7=29
2.9% is the same as 0.029 and 0.029*25 = 0.725