Answer: 1) You forgot to change the sign over there. You have to subtract over there.
2) Just be careful while solving equations while changing the signs
Well if finding X you get 4,-7 when you simplify the whole equation you get that as well.
You'll have to multiply 0.7 by 120.
120*0.7 = n
n is the number that is 70% of 120
120 * 0.7 = 84
Hope this helps :)
128 cm square space is required for 48 seedlings
check
for 1 seedlings= 64÷ 24
= 2.66
for 48 seedlings = 2.66666667× 48 = 128
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The answer would be -9 -15n because you would be adding one to the -10 to the one and -9 and plus -2 and plus negative for any equals 15n