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4a+3a-4 = 10 4a+3a = 10+4 7a = 14 a = 2
4a-2=7a-6 4=3a a=4/3
3a-9 = 6 3a = 6+9 3a = 15 a = 15/3 a = 5 Substitute a = 5 into 4a-1. 4a-1 =4(5)-1 =20-1 =19 Therefore, the value of 4a-1 is 19.
a-16 = a/4+2 Multiply all terms by 4: 4a-64 = a+8 4a-a = 8+64 3a = 72 a = 24
To simplify the expression 3a^2 * 4a^5, you can first multiply the coefficients 3 and 4 to get 12. Then, you add the exponents of 'a', which gives you a total exponent of 7. Therefore, the simplified expression is 12a^7.