Question

2x+4)(9x-1)-(6x+3)•3x=46

Answer 1

Ответ:

$(2x + 4)(9x - 1) - (6x + 3) \times 3x = 46 \\18x^{2}+34x-4-\left(6x+3\right)\times 3x=46 \\18x^{2}+34x-4-\left(18x+9\right)x=46 \\18x^{2}+34x-4-\left(18x^{2}+9x\right)=46 \\18x^{2}+34x-4-18x^{2}-9x=46 \\34x-4-9x=46 \\25х-4=46\\25х=46+4\\25х=50\\х=50÷25\\х=2$