Question

Equaçoes de 1 grau
(coloquem a continha pra mim pleasse♥)
4-(x+1)=12
5(3-x)-4x=18
9x-3(2x+2)=15
6(3x+2)-8-2
-3(x-5-)-2(2x+1)
4x(x+6)-x-5x

Answer 1

Explicação passo-a-passo:

• $4 - (x + 1) = 12 \\ 4 - x - 1 = 12 \\ - x = 12 - 4 + 1 \\ - x = 8 + 1 \\ - x = 9 \: \: \: \times ( - 1) \\ x = - 9$
• $5 \times (3 - x) - 4x = 18 \\ 15 - 5x - 4x = 18 \\ - 5x - 4x = 18 - 15 \\ - 9x = 3 \\ - x = \frac{3 \div 3}{9 \div 3} \\ - x = \frac{1}{3} \: \: \: \times ( - 1) \\ x = - \frac{1}{3}$
• $9x - 3 \times (2x + 2) = 15 \\ 9x - 6x - 6 = 15 \\ 9x - 6x = 15 + 6 \\ 3x = 21 \\ x = \frac{21}{3} \\ x = 7$
• $6 \times (3x + 2) - 8 - 2 \\ 18x + 12 - 8 - 2 \\ 18x + 4 - 2 \\ 18x + 2$
• $- 3 \times (x - 5 - ) - 2 \times (2x + 1) \\ ( - 3x + 15 - ) - 4x - 2 \\ - 7x + 15 - ( - 2) \\ - 7x + 15 + 2 \\ - 7x + 17$
• $4x \times (x + 6) - x - 5x \\ {4x}^{2} + 24x - x - 5x \\ {4x}^{2} + 23x - 5x \\ {4x}^{2} + 18x$