Question

12 va rog urgent rapid

Answer 1

4×23+2×40+a=5×33+7×51
92+80+a=165+357
172+a=522
a=522-172
a=350

3×24+2×69+a=8×47+4×51
72+138+a=376+204
210+a=580
a=580-210
a=370

6×36+9×12+a=9×41+7×45
216+108+a=329+315
324+a=644
a=644-324
a=320

Answer 2

4x23+2x40+a=5x33+7x51
92+80+a=165+357
172+a=522
a=522-172
a=350
4x23+2x40+350=5x33+7x51
522=522
3x24+2x69+a=8x47+4x51
72+138+a=376+204
210+a=580
a=580-210
a=370
3x24+2x69+370=8x47+4x51
580=580
6x36+9x12+a=9x41+7x45
216+108+a=369+315
324+a=684
a=684-324
a=360
6x36+9x12+a=9x41+7x45
684=684